Uneven tick spacing with maxTicksLimit and min options with Chart.js 3

[ankane]

Hey, congrats on the 3.0 release! Came across a possible issue with the interaction of the maxTicksLimit and min options.

Expected Behavior

Even tick spacing (like in Chart.js 2)

Current Behavior

Uneven tick spacing

Steps to Reproduce

https://codepen.io/ankane/pen/LYxyXEN

There's even spacing when the min option is removed (and has the same min value in the example). There's also even spacing if maxTicksLimit is increased by one in the example (and has less than maxTicksLimit ticks).

Noticed this with both bar and line charts.

Context

Ran into this trying to upgrade Chartkick to Chart.js 3

Environment

• Chart.js version: 3.0.1
• Browser name and version: Firefox 87.0

Edit: Also, it's probably on your list, but the Codepen in the new issue template could use upgrading to Chart.js 3

[etimberg]

A quick analysis says that it was introduced in beta.13

Based on the release notes, only #8569 seems to be applicable.

[etimberg]

Interestingly, if beginAtZero is used instead of min: 0 it works fine.

[etimberg]

@ankane a fix for this was released in 3.0.2

[ankane]

That was super fast. Just tried it and works great. Thanks @etimberg and @kurkle!