@sentry/nextjs: Multiple browserTracingIntegration instances are not supported. #16369

Description

@mrmckeb

Is there an existing issue for this?

How do you use Sentry?

Sentry Saas (sentry.io)

Which SDK are you using?

@sentry/nextjs

SDK Version

9.22.0

Framework Version

next: ^15.3.2 / react: ^19.1.0

Link to Sentry event

No response

Reproduction Example/SDK Setup

// instrumentation-client.tsimport{browserTracingIntegration,featureFlagsIntegration,init,replayIntegration,}from"@sentry/nextjs";init({integrations: [browserTracingIntegration(),featureFlagsIntegration(),replayIntegration({blockAllMedia: true,maskAllInputs: true,maskAllText: true,}),],tracesSampleRate: 0.01,replaysOnErrorSampleRate: 1.0,replaysSessionSampleRate: 0,}

Steps to Reproduce

We have Turbopack on for development only. We do have instrumentation.ts for Edge & Server.

Expected Result

Should not see the browserTracingIntegration warning logged to the browser console.

Actual Result

The warning is logged in production:

Multiple browserTracingIntegration instances are not supported.

Activity

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    , 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Add copy buttons to all
     blocks\n(function() {\n function addCopyButtons() {\n document.querySelectorAll('pre code').forEach(function(codeBlock) {\n if (codeBlock.parentElement.hasAttribute('data-copy-added')) return;\n codeBlock.parentElement.setAttribute('data-copy-added', 'true');\n \n var btn = document.createElement('button');\n btn.textContent = 'Copy';\n btn.style.cssText = 'position:absolute;top:4px;right:4px;padding:2px 8px;font-size:11px;background:#4ecdc4;border:none;border-radius:4px;color:#1a1a2e;cursor:pointer;opacity:0.7;transition:opacity 0.2s;';\n btn.onmouseover = function() { this.style.opacity = '1'; };\n btn.onmouseout = function() { this.style.opacity = '0.7'; };\n btn.onclick = function() {\n navigator.clipboard.writeText(codeBlock.textContent).then(function() {\n btn.textContent = 'Copied!';\n setTimeout(function() { btn.textContent = 'Copy'; }, 1500);\n });\n };\n codeBlock.parentElement.style.position = 'relative';\n codeBlock.parentElement.appendChild(btn);\n });\n }\n \n addCopyButtons();\n \n // Re-run on dynamic content\n var observer = new MutationObserver(addCopyButtons);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Add Copy Buttons to Code Blocks");
    }
    } catch(__e) { console.warn('[Userscript:Add Copy Buttons to Code Blocks]', __e); }
    })();
    (function(){
    try {
    var __m = "github.com";
    var __re = new RegExp('^' + "github\\.com" + '
    
    Skip to content

    @sentry/nextjs: Multiple browserTracingIntegration instances are not supported. #16369

    Description

    @mrmckeb

    Is there an existing issue for this?

    How do you use Sentry?

    Sentry Saas (sentry.io)

    Which SDK are you using?

    @sentry/nextjs

    SDK Version

    9.22.0

    Framework Version

    next: ^15.3.2 / react: ^19.1.0

    Link to Sentry event

    No response

    Reproduction Example/SDK Setup

    // instrumentation-client.tsimport{browserTracingIntegration,featureFlagsIntegration,init,replayIntegration,}from"@sentry/nextjs";init({integrations: [browserTracingIntegration(),featureFlagsIntegration(),replayIntegration({blockAllMedia: true,maskAllInputs: true,maskAllText: true,}),],tracesSampleRate: 0.01,replaysOnErrorSampleRate: 1.0,replaysSessionSampleRate: 0,}

    Steps to Reproduce

    We have Turbopack on for development only. We do have instrumentation.ts for Edge & Server.

    Expected Result

    Should not see the browserTracingIntegration warning logged to the browser console.

    Actual Result

    The warning is logged in production:

    Multiple browserTracingIntegration instances are not supported.

    Activity

    Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment

    Metadata

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    No one assigned

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      No milestone

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      , 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Force GitHub README to respect dark mode\n(function() {\n var style = document.createElement('style');\n style.textContent = '\n .markdown-body {\n color-scheme: dark light;\n }\n .markdown-body pre { background: #161b22 !important; }\n .markdown-body code { background: rgba(110, 118, 129, 0.4) !important; }\n .markdown-body table th, .markdown-body table td { border-color: #30363d !important; }\n .markdown-body img { background: #0d1117; }\n .markdown-body blockquote { border-left-color: #8b949e; }\n .markdown-body hr { border-color: #30363d; }\n ';\n document.head.appendChild(style);\n})();", "GitHub Dark Mode README Fix"); } } catch(__e) { console.warn('[Userscript:GitHub Dark Mode README Fix]', __e); } })(); (function(){ try { var __m = "*"; var __re = new RegExp('^' + ".*" + '
      Skip to content

      @sentry/nextjs: Multiple browserTracingIntegration instances are not supported. #16369

      Description

      @mrmckeb

      Is there an existing issue for this?

      How do you use Sentry?

      Sentry Saas (sentry.io)

      Which SDK are you using?

      @sentry/nextjs

      SDK Version

      9.22.0

      Framework Version

      next: ^15.3.2 / react: ^19.1.0

      Link to Sentry event

      No response

      Reproduction Example/SDK Setup

      // instrumentation-client.tsimport{browserTracingIntegration,featureFlagsIntegration,init,replayIntegration,}from"@sentry/nextjs";init({integrations: [browserTracingIntegration(),featureFlagsIntegration(),replayIntegration({blockAllMedia: true,maskAllInputs: true,maskAllText: true,}),],tracesSampleRate: 0.01,replaysOnErrorSampleRate: 1.0,replaysSessionSampleRate: 0,}

      Steps to Reproduce

      We have Turbopack on for development only. We do have instrumentation.ts for Edge & Server.

      Expected Result

      Should not see the browserTracingIntegration warning logged to the browser console.

      Actual Result

      The warning is logged in production:

      Multiple browserTracingIntegration instances are not supported.

      Activity

      Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment

      Metadata

      Metadata

      Assignees

      No one assigned

        Projects

        Milestone

        No milestone

        Relationships

        None yet

        Development

        No branches or pull requests

        Issue actions

        , 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Highlight search terms from Google/DuckDuckGo/Bing referrer\n(function() {\n var ref = document.referrer;\n var terms = [];\n \n if (ref.includes('google.com') || ref.includes('duckduckgo.com') || ref.includes('bing.com')) {\n var url = new URL(ref);\n var q = url.searchParams.get('q') || url.searchParams.get('p');\n if (q) {\n terms = q.split(/\\s+/).filter(function(t) { return t.length > 2; });\n }\n }\n \n if (terms.length === 0) return;\n \n var style = document.createElement('style');\n style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }';\n document.head.appendChild(style);\n \n function highlight(node) {\n if (node.nodeType === 3) { // text node\n var text = node.textContent;\n var found = false;\n terms.forEach(function(term) {\n var regex = new RegExp('(' + term.replace(/[.*+?^${}()|[\\]\\\\]/g, '\\\\') + ')', 'gi');\n if (regex.test(text)) {\n found = true;\n var frag = document.createDocumentFragment();\n var parts = text.split(regex);\n parts.forEach(function(part, i) {\n if (i % 2 === 0) {\n frag.appendChild(document.createTextNode(part));\n } else {\n var span = document.createElement('span');\n span.className = 'userscript-highlight';\n span.textContent = part;\n frag.appendChild(span);\n }\n });\n node.parentNode.replaceChild(frag, node);\n }\n });\n } else if (node.nodeType === 1 && node.childNodes) { // element\n var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT'];\n if (!skipTags.includes(node.tagName)) {\n Array.from(node.childNodes).forEach(highlight);\n }\n }\n }\n \n highlight(document.body);\n \n // Re-highlight on dynamic content\n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1 || node.nodeType === 3) highlight(node);\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Highlight Search Terms"); } } catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); } })(); (function(){ try { var __m = "*"; var __re = new RegExp('^' + ".*" + '
        Skip to content

        @sentry/nextjs: Multiple browserTracingIntegration instances are not supported. #16369

        Description

        @mrmckeb

        Is there an existing issue for this?

        How do you use Sentry?

        Sentry Saas (sentry.io)

        Which SDK are you using?

        @sentry/nextjs

        SDK Version

        9.22.0

        Framework Version

        next: ^15.3.2 / react: ^19.1.0

        Link to Sentry event

        No response

        Reproduction Example/SDK Setup

        // instrumentation-client.tsimport{browserTracingIntegration,featureFlagsIntegration,init,replayIntegration,}from"@sentry/nextjs";init({integrations: [browserTracingIntegration(),featureFlagsIntegration(),replayIntegration({blockAllMedia: true,maskAllInputs: true,maskAllText: true,}),],tracesSampleRate: 0.01,replaysOnErrorSampleRate: 1.0,replaysSessionSampleRate: 0,}

        Steps to Reproduce

        We have Turbopack on for development only. We do have instrumentation.ts for Edge & Server.

        Expected Result

        Should not see the browserTracingIntegration warning logged to the browser console.

        Actual Result

        The warning is logged in production:

        Multiple browserTracingIntegration instances are not supported.

        Activity

        Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment

        Metadata

        Metadata

        Assignees

        No one assigned

          Projects

          Milestone

          No milestone

          Relationships

          None yet

          Development

          No branches or pull requests

          Issue actions

          , 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Strip utm_, fbclid, gclid, etc. from all links on page\n(function() {\n var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',\n 'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',\n 'ref', 'ref_src', 'source', 'medium', 'campaign'];\n \n function cleanUrl(url) {\n try {\n var u = new URL(url, window.location.origin);\n var changed = false;\n trackingParams.forEach(function(p) {\n if (u.searchParams.has(p)) {\n u.searchParams.delete(p);\n changed = true;\n }\n });\n return changed ? u.toString() : url;\n } catch (e) {\n return url;\n }\n }\n \n function cleanLinks() {\n document.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n \n cleanLinks();\n \n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1) {\n if (node.tagName === 'A') cleanLinks();\n node.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Remove Tracking Parameters from Links"); } } catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); } })(); (function(){ try { var __m = "youtube.com"; var __re = new RegExp('^' + "youtube\\.com" + '
          Skip to content

          @sentry/nextjs: Multiple browserTracingIntegration instances are not supported. #16369

          Description

          @mrmckeb

          Is there an existing issue for this?

          How do you use Sentry?

          Sentry Saas (sentry.io)

          Which SDK are you using?

          @sentry/nextjs

          SDK Version

          9.22.0

          Framework Version

          next: ^15.3.2 / react: ^19.1.0

          Link to Sentry event

          No response

          Reproduction Example/SDK Setup

          // instrumentation-client.tsimport{browserTracingIntegration,featureFlagsIntegration,init,replayIntegration,}from"@sentry/nextjs";init({integrations: [browserTracingIntegration(),featureFlagsIntegration(),replayIntegration({blockAllMedia: true,maskAllInputs: true,maskAllText: true,}),],tracesSampleRate: 0.01,replaysOnErrorSampleRate: 1.0,replaysSessionSampleRate: 0,}

          Steps to Reproduce

          We have Turbopack on for development only. We do have instrumentation.ts for Edge & Server.

          Expected Result

          Should not see the browserTracingIntegration warning logged to the browser console.

          Actual Result

          The warning is logged in production:

          Multiple browserTracingIntegration instances are not supported.

          Activity

          Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment

          Metadata

          Metadata

          Assignees

          No one assigned

            Projects

            Milestone

            No milestone

            Relationships

            None yet

            Development

            No branches or pull requests

            Issue actions

            , 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Auto-enable theater mode on YouTube\n(function() {\n function tryTheater() {\n var btn = document.querySelector('button[aria-label=\"Theater mode\"], ytd-player #player button[title=\"Theater mode\"]');\n if (btn && !btn.classList.contains('activated')) {\n btn.click();\n }\n }\n \n // Try immediately\n tryTheater();\n \n // Try after navigation (SPA)\n var lastUrl = location.href;\n setInterval(function() {\n if (location.href !== lastUrl) {\n lastUrl = location.href;\n setTimeout(tryTheater, 500);\n }\n }, 1000);\n \n // Also try on player load\n var observer = new MutationObserver(tryTheater);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "YouTube Theater Mode Default"); } } catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); } })(); (function(){ try { var __m = "*"; var __re = new RegExp('^' + ".*" + '
            Skip to content

            @sentry/nextjs: Multiple browserTracingIntegration instances are not supported. #16369

            Description

            @mrmckeb

            Is there an existing issue for this?

            How do you use Sentry?

            Sentry Saas (sentry.io)

            Which SDK are you using?

            @sentry/nextjs

            SDK Version

            9.22.0

            Framework Version

            next: ^15.3.2 / react: ^19.1.0

            Link to Sentry event

            No response

            Reproduction Example/SDK Setup

            // instrumentation-client.tsimport{browserTracingIntegration,featureFlagsIntegration,init,replayIntegration,}from"@sentry/nextjs";init({integrations: [browserTracingIntegration(),featureFlagsIntegration(),replayIntegration({blockAllMedia: true,maskAllInputs: true,maskAllText: true,}),],tracesSampleRate: 0.01,replaysOnErrorSampleRate: 1.0,replaysSessionSampleRate: 0,}

            Steps to Reproduce

            We have Turbopack on for development only. We do have instrumentation.ts for Edge & Server.

            Expected Result

            Should not see the browserTracingIntegration warning logged to the browser console.

            Actual Result

            The warning is logged in production:

            Multiple browserTracingIntegration instances are not supported.

            Activity

            Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment

            Metadata

            Metadata

            Assignees

            No one assigned

              Projects

              Milestone

              No milestone

              Relationships

              None yet

              Development

              No branches or pull requests

              Issue actions

              , 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Remove or un-stick sticky/fixed headers that block content\n(function() {\n function unstick() {\n document.querySelectorAll('header, nav, [role=\"banner\"], .header, .navbar, .sticky, .fixed-top, [style*=\"position: fixed\"], [style*=\"position:sticky\"]').forEach(function(el) {\n if (el.style.position === 'fixed' || el.style.position === 'sticky' || \n getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') {\n el.style.position = 'static';\n el.style.top = 'auto';\n el.style.zIndex = 'auto';\n }\n });\n }\n \n unstick();\n \n var observer = new MutationObserver(unstick);\n observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });\n})();", "Kill Sticky Headers"); } } catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); } })(); (function(){ try { var __m = "*"; var __re = new RegExp('^' + ".*" + '
              Skip to content

              @sentry/nextjs: Multiple browserTracingIntegration instances are not supported. #16369

              Description

              @mrmckeb

              Is there an existing issue for this?

              How do you use Sentry?

              Sentry Saas (sentry.io)

              Which SDK are you using?

              @sentry/nextjs

              SDK Version

              9.22.0

              Framework Version

              next: ^15.3.2 / react: ^19.1.0

              Link to Sentry event

              No response

              Reproduction Example/SDK Setup

              // instrumentation-client.tsimport{browserTracingIntegration,featureFlagsIntegration,init,replayIntegration,}from"@sentry/nextjs";init({integrations: [browserTracingIntegration(),featureFlagsIntegration(),replayIntegration({blockAllMedia: true,maskAllInputs: true,maskAllText: true,}),],tracesSampleRate: 0.01,replaysOnErrorSampleRate: 1.0,replaysSessionSampleRate: 0,}

              Steps to Reproduce

              We have Turbopack on for development only. We do have instrumentation.ts for Edge & Server.

              Expected Result

              Should not see the browserTracingIntegration warning logged to the browser console.

              Actual Result

              The warning is logged in production:

              Multiple browserTracingIntegration instances are not supported.

              Activity

              Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment

              Metadata

              Metadata

              Assignees

              No one assigned

                Projects

                Milestone

                No milestone

                Relationships

                None yet

                Development

                No branches or pull requests

                Issue actions

                , 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Universal Dark Mode - works on any site\n(function() {\n var enabled = true;\n \n function applyDarkMode() {\n if (!enabled) return;\n \n // Create style element if it doesn't exist\n var style = document.getElementById('universal-dark-mode-style');\n if (!style) {\n style = document.createElement('style');\n style.id = 'universal-dark-mode-style';\n document.head.appendChild(style);\n }\n \n // Dark mode CSS - inverts colors but preserves images/video\n style.textContent = '\n /* Invert everything except media */\n html {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #1a1a2e !important;\n }\n \n /* Restore images, videos, iframes, canvas */\n img, video, iframe, canvas, svg, picture, [style*=\"background-image\"] {\n filter: invert(1) hue-rotate(180deg) !important;\n }\n \n /* Preserve specific elements that should not be inverted */\n .no-dark-mode, .no-dark-mode *,\n [data-theme=\"light\"], [data-theme=\"light\"],\n .ace_editor, .ace_editor *,\n .CodeMirror, .CodeMirror *,\n .monaco-editor, .monaco-editor *,\n .markdown-body pre, .markdown-body pre *,\n .highlight, .highlight *,\n pre code, pre code * {\n filter: none !important;\n }\n \n /* Fix common UI elements */\n .modal, .popup, .dropdown-menu, .tooltip, .popover {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #2d2d44 !important;\n border-color: #444 !important;\n }\n \n /* Scrollbars */\n ::-webkit-scrollbar { background: #1a1a2e !important; }\n ::-webkit-scrollbar-thumb { background: #444 !important; }\n ::-webkit-scrollbar-thumb:hover { background: #555 !important; }\n \n /* Selection */\n ::selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ';\n }\n \n function removeDarkMode() {\n var style = document.getElementById('universal-dark-mode-style');\n if (style) style.remove();\n }\n \n // Toggle with Alt+Shift+D\n document.addEventListener('keydown', function(e) {\n if (e.altKey && e.shiftKey && e.key === 'D') {\n e.preventDefault();\n enabled = !enabled;\n if (enabled) {\n applyDarkMode();\n console.log('[Universal Dark Mode] Enabled');\n } else {\n removeDarkMode();\n console.log('[Universal Dark Mode] Disabled');\n }\n }\n });\n \n // Apply on load\n applyDarkMode();\n \n // Re-apply on dynamic content\n var observer = new MutationObserver(function(mutations) {\n if (enabled && !document.getElementById('universal-dark-mode-style')) {\n applyDarkMode();\n }\n });\n observer.observe(document.head, { childList: true });\n \n console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle');\n})();", "Universal Dark Mode"); } } catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); } })(); })();
                Skip to content

                @sentry/nextjs: Multiple browserTracingIntegration instances are not supported. #16369

                Description

                @mrmckeb

                Is there an existing issue for this?

                How do you use Sentry?

                Sentry Saas (sentry.io)

                Which SDK are you using?

                @sentry/nextjs

                SDK Version

                9.22.0

                Framework Version

                next: ^15.3.2 / react: ^19.1.0

                Link to Sentry event

                No response

                Reproduction Example/SDK Setup

                // instrumentation-client.tsimport{browserTracingIntegration,featureFlagsIntegration,init,replayIntegration,}from"@sentry/nextjs";init({integrations: [browserTracingIntegration(),featureFlagsIntegration(),replayIntegration({blockAllMedia: true,maskAllInputs: true,maskAllText: true,}),],tracesSampleRate: 0.01,replaysOnErrorSampleRate: 1.0,replaysSessionSampleRate: 0,}

                Steps to Reproduce

                We have Turbopack on for development only. We do have instrumentation.ts for Edge & Server.

                Expected Result

                Should not see the browserTracingIntegration warning logged to the browser console.

                Actual Result

                The warning is logged in production:

                Multiple browserTracingIntegration instances are not supported.

                Activity

                Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment

                Metadata

                Metadata

                Assignees

                No one assigned

                  Projects

                  Milestone

                  No milestone

                  Relationships

                  None yet

                  Development

                  No branches or pull requests

                  Issue actions