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[BUG] dash.testing.ThreadedRunner misdetects a subclassed/wrapped FastAPI app as Flask (e.g. under OpenTelemetry auto-instrumentation) -> TypeError: Config.__init__() got an unexpected keyword argument 'threaded'

Status: Open.

#3942In plotly/dash;

· biyani701 opened on Aug 4, 2026

[BUG] Websocket connection initiated by front end even if not enabled in back end

bugsomething brokensomething broken

P2considered for next cycleconsidered for next cycle

size: 1

Status: Open.

#3939In plotly/dash;

· andredfb opened on Aug 3, 2026

[BUG] dcc.Patch() wipes persistence of sibling pattern-matching elements

bugsomething brokensomething broken

P2considered for next cycleconsidered for next cycle

size: 1

Status: Open.

#3937In plotly/dash;

· Aaron-Wrote-This opened on Aug 3, 2026

[BUG] dcc.RangeSlider ignores allowCross=False and lets handles cross

bugsomething brokensomething broken

P2considered for next cycleconsidered for next cycle

size: 1

Status: Open.

#3935In plotly/dash;

· Sasha-P opened on Aug 1, 2026

[BUG] dbc Tabs not showing default first tab anymore with Dash 4.2.0 and higher

bugsomething brokensomething broken

P1needed for current cycleneeded for current cycle

size: 3

Status: Open.

#3929In plotly/dash;

· ghaarsma opened on Jul 31, 2026

Silently setting use_async to True when asgiref is available is non-obvious

bugsomething brokensomething broken

P2considered for next cycleconsidered for next cycle

size: 3

Status: Open.

#3927In plotly/dash;

· ckrivik opened on Jul 31, 2026

[Feature Request] Option to compress request payload in a callback

enhancement

P3backlogbacklog

size: 3

Status: Open.

#3924In plotly/dash;

· datenzauberai opened on Jul 29, 2026

[Feature Request] Support Curved Decision Boundaries and Dynamic Phase Detection for Bar Components

enhancement

P3backlogbacklog

size: 5

Status: Open.

#3913In plotly/dash;

· cnlnr opened on Jul 22, 2026

[BUG] Callbacks still double-register with uvicorn --reload when an explicit name is passed to Dash() (incomplete fix for #3818 / #3883)

enhancement

P3backlogbacklog

size: 10+

Status: Open.

#3912In plotly/dash;

· essol-li opened on Jul 22, 2026

(Docs Update) Using .mjs assets requires explicit mimetype specification

P3backlogbacklog

size: 1

taskone-off taskone-off task

Status: Open.

#3900In plotly/dash;

· aGitForEveryone opened on Jul 16, 2026

[BUG] Graphs excluded from print pages if they have over 1000 datapoints

bugsomething brokensomething broken

P3backlogbacklog

size: 10+

Status: Open.

#3889In plotly/dash;

· aGitForEveryone opened on Jul 10, 2026

[BUG] 4.2.0: callback-rendered children unmount/remount instead of updating in place (regression, bisects to #3570)

bugsomething brokensomething broken

P1needed for current cycleneeded for current cycle

size: 3

Status: Open.

#3846In plotly/dash;

· romanov-o opened on Jun 25, 2026