Changes to resize events and animation in 4.5.1 #12143

Activity

1. joshkel

   added

   type: bug

   on Oct 28, 2025
2. kk-adi commented on Oct 31, 2025

   

   kk-adi

   on Oct 31, 2025

   More actions

   Hi @joshkel
   I face an issue after updating from 4.5.0 to 4.5.1 and it's only a problem with zoom levels different than 100% so I believe it's related to the issue you reported.
   The extra resize triggers re-renders, which crashes my app when using chartjs-plugin-datalabels.

   hook.js:608 React Router caught the following error during render TypeError: Cannot read properties of undefined (reading 'length')
       at Object.draw (chartjs-plugin-datalabels.esm.js:1003:31)
       at Object.afterDatasetsDraw (chartjs-plugin-datalabels.esm.js:1302:12)
       at callback (helpers.core.ts:109:15)
       at PluginService._notify (core.plugins.js:65:11)
       at PluginService.notify (core.plugins.js:46:25)
       at Chart.notifyPlugins (core.controller.js:1130:26)
       at Chart._drawDatasets (core.controller.js:775:10)
       at Chart.draw (core.controller.js:724:10)
       at Chart.render (core.controller.js:693:12)
       at Chart._resize (core.controller.js:299:14)
   

   For the unknown reasons, _labels is undefined (only with zoom != 100%).

     afterDatasetsDraw: function(chart) {
       layout.draw(chart, chart[EXPANDO_KEY]._labels);
     },
   

   👍React with 👍1Reacted by Pat McGowan
3. joshkel commented on Oct 31, 2025

   

   joshkel

   on Oct 31, 2025

   ContributorAuthor

   More actions

   @kk-adi Thanks for the info. If you're able to test #12142, to see if that fixes it, that may be helpful. Or, if you're able to share a reproducible example at https://codepen.io/leelenaleee/pen/WNyJXEe or similar, I can test it out.

   👍React with 👍1Reacted by Pat McGowan
4. LeeLenaleee

   closed this as completedin #12142on Nov 16, 2025
5. pika-02-03

   added 2 commits that reference this issue on Feb 23, 2026

   fix: aspectRatio未変更時はresize()をスキップしてアニメーションを維持

   ...

   63ba481

   fix: Chart.js 4.5.1のresizeリグレッションを回避するため4.4.7に固定

   ...

   3f41487
6. danielabar

   added a commit that references this issue on May 23, 2026

   Pin chartkick < 5.2.1 to avoid Chart.js 4.5.1 animation regression (#203

   ...

   e51fbd5
7. pika-02-03

   added a commit that references this issue on Jun 10, 2026

   fix: Chart.js 4.5.1のresizeリグレッションを回避するため4.4.7に固定

   ...

   74d7635