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[collapsible] Layout shift when animated and the Panel is initially open #740

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mj12albert opened this issue Oct 17, 2024 · 3 comments
Open

[collapsible] Layout shift when animated and the Panel is initially open #740

mj12albert opened this issue Oct 17, 2024 · 3 comments
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component: collapsible This is the name of the generic UI component, not the React module! performance

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mj12albert commented Oct 17, 2024 •
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only the one using CSS transitions is consistently flagged for CLS here

https://deploy-preview-577--base-ui.netlify.app/experiments/collapsible-cls

Screenshot 2024-10-25 at 9 30 35 PM
@mj12albert mj12albert added component: collapsible This is the name of the generic UI component, not the React module! performance labels Oct 17, 2024
@mj12albert mj12albert self-assigned this Oct 17, 2024
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mj12albert commented Oct 25, 2024 •
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testing the /components/react-menu page:

master branch vs #577, there is basically no difference

The Demo collapsible uses CSS animations and doesn't get flagged for CLS

master
Screenshot 2024-10-25 at 9 32 11 PM

after changes
Screenshot 2024-10-25 at 9 33 20 PM

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@michaldudak Do you still reproduce this on the Demo component's Collapsible? I don't get it even on master anymore, but using CSS transitions, the minimal example in experiments is quite consistent

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michaldudak commented Oct 28, 2024 •
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No, it seems it somehow was fixed in the meantime. Lighthouse doesn't report layout shift problems anymore on master. There still is a layout shift when using transitions, but it's not flagged as an issue.

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