1618421 - [wpt-sync] Sync PR 22000 - Don't let a CompositingInputsRoot be a contain:strict element if it was dirty.

Status: RESOLVED FIXED

(Core :: Layout: Positioned, task, P4)

Description

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

Sync web-platform-tests PR 22000 into mozilla-central (this bug is closed when the sync is complete).

PR: https://github.com/web-platform-tests/wpt/pull/22000
Details from upstream follow.

Chris Harrelson <[e-mail]> wrote:

Don't let a CompositingInputsRoot be a contain:strict element if it was dirty.

contain:strict elements are stopping points for ancestor recursion when
finding a CompositingInputsRoot, but this should only be for when
descendants of the contain:strict element are dirtied, not the
contain:strict element itself.

This problem exhibited in a bug in a case when the contain:strict
element was also position:sticky, causing it to fail to update sticky
position constraints as a result.

Bug: 1051455

Change-Id: If7e9f3d19ce5dc949ee9ba6ab7c0c0c2e03b2f20

Reviewed-on: https://chromium-review.googlesource.com/2076546
WPT-Export-Revision: 28ccf61dbdbc60a069d5aef9a253efd4e3e25d8c

Comment 1

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

Pushed to try (stability) https://treeherder.mozilla.org/#/jobs?repo=try&revision=153d2fc892a091e270a43a9ccedc7052a1ceb47b

Comment 2

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

CI Results

Ran 0 Firefox configurations based on mozilla-central, and Firefox, Chrome, and Safari on GitHub CI

Total 1 tests

Status Summary

Firefox

PASS: 1

Chrome

FAIL: 1

Safari

PASS: 1

Links

GitHub PR Head
GitHub PR Base

Comment 3

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/9bde1fb500cf
[wpt PR 22000] - Don't let a CompositingInputsRoot be a contain:strict element if it was dirty., a=testonly

Comment 4

[Dorel Luca [:dluca]]

https://hg.mozilla.org/mozilla-central/rev/9bde1fb500cf