2027014 - New wpt failures in /css/css-animations/responsive/fill-forwards-viewport-units.html

Status: NEW

(Core :: CSS Transitions and Animations, defect)

Description

[Web Platform Test Sync Bot [:wpt-sync] (Matrix: #interop:mozilla.org)]

Syncing wpt PR 58793 found new untriaged test failures in CI

Tests Affected

New Tests That Don't Pass

• /css/css-animations/responsive/fill-forwards-viewport-units.html [wpt.fyi]
  • fill: forwards with viewport units updates on viewport resize: FAIL (Chrome: PASS, Safari: FAIL)

CI Results

Gecko CI (Treeherder)
GitHub PR Head

Notes

These updates will be on mozilla-central once bug 2026934 lands.

Note: this bug is for tracking fixing the issues and is not
owned by the wpt sync bot.

This bug is linked to the relevant tests by an annotation in
https://github.com/web-platform-tests/wpt-metadata. These annotations
can be edited using the wpt interop dashboard
https://jgraham.github.io/wptdash/

If this bug is split into multiple bugs, please also update the
annotations, otherwise we are unable to track which wpt issues are
already triaged. Resolving as duplicate or closing this issue should
be cause the bot to automatically update or remove the annotation.

Comment 1

[Daniel Holbert [:dholbert]]

Looks like we don't recalculate vw units (in animation keyframes endpoints) when the viewport resizes. Valid bug, triaging as S3.

Comment 2

[Emilio Cobos Álvarez [:emilio]]

Seems like a pretty similar issue to bug 2030129. Keyframes get computed and then uncomputed, losing their vw-ness when they get inserted in the cascade.