Bug 287078
| Summary: | REGRESSION (283036@main): Some linear() WPT tests started failing | ||
|---|---|---|---|
| Product: | WebKit | Reporter: | Bramus <bramus> |
| Component: | Animations | Assignee: | Sam Weinig <sam> |
| Status: | RESOLVED WONTFIX | ||
| Severity: | Normal | CC: | bfulgham, graouts, graouts, ntim, rik, sam, simon.fraser, webkit-bug-importer, zalan |
| Priority: | P2 | Keywords: | BrowserCompat, InRadar, Regression |
| Version: | Safari Technology Preview | ||
| Hardware: | Unspecified | ||
| OS: | All | ||
Bramus
I noticed that there is a regression in passing WPTs for linear():
- Safari 18.1: 21/21 PASS [^1]
- Safari 18.2: 18/21 PASS [^2]
Looking at https://webstatus.dev/features/linear-easing?q=linear, the drop in passing tests was introduced on Dec 12 2024, around the time Safari Technology Preview 210 was released.
I couldn’t immediately find a bug that tracks this, so I’m filing this new one.
[^1]: https://wpt.fyi/results/css/css-easing/linear-timing-functions-syntax.html?label=stable&label=master&product=safari-18.1%20%2820619.2.8.11.10%29&aligned&q=linear
[^2]: https://wpt.fyi/results/css/css-easing/linear-timing-functions-syntax.html?label=master&label=stable&product=safari-18.2%20%2820620.1.16.11.8%29&aligned&q=linear
| Attachments | ||
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| Add attachment proposed patch, testcase, etc. |
Anthony Ricaud
Running https://github.com/WebKit/webkit/blob/main/Tools/Scripts/bisect-builds could help narrow down the commit that introduced the issue.
Radar WebKit Bug Importer
<rdar://problem/144256867>
Antoine Quint
Good catch Bramus, I found STP 203 to be the first build to introduce this issue:
https://wpt.fyi/results/css/css-easing/linear-timing-functions-syntax.html?label=master&label=experimental&product=safari-202%20preview&aligned
https://wpt.fyi/results/css/css-easing/linear-timing-functions-syntax.html?label=master&label=experimental&product=safari-203%20preview&aligned
Going to bisect WebKit commits to find the exact regression point.
Antoine Quint
Oddly, this test passes within the WebKit test harness but definitely fails when loading live in Safari or Safari Technology Preview:
http://wpt.live/css/css-easing/linear-timing-functions-syntax.html
Antoine Quint
The commit range between STP 202 and STP 203 is 282390@main:283042@main according to https://webkit.org/blog/15860/release-notes-for-safari-technology-preview-203/.
Antoine Quint
This regressed with 283036@main. Cc'ing Sam Weinig who landed that patch.
Sam Weinig
This was just me failing to upstream my WPT changes :(.
Here is the PR to do that now -> https://github.com/web-platform-tests/wpt/pull/50533.
Bramus
Phew!