1949742 - Use will-change: transform in the urlbar to make sure to consistently contain fixed position descendants.

Status: RESOLVED FIXED

(Firefox :: Address Bar, task)

Comment 1

[Emilio Cobos Álvarez (:emilio)]

Attachment: Bug 1949742 - Use will-change in the urlbar. r=#theme,#urlbar-reviewers

To make sure to consistently contain fixed position descendants.

This fixes the menubar case in bug 1949528 comment 5, which was
regressed by bug 1937363 because it added a position: fixed element
inside the urlbar.

Comment 2

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/b401d9edda8d
Use will-change in the urlbar. r=desktop-theme-reviewers,urlbar-reviewers,dao

Comment 3

[Serban Stanca [:SerbanS]]

https://hg.mozilla.org/mozilla-central/rev/b401d9edda8d

Comment 4

[Emilio Cobos Álvarez (:emilio)]

Comment on attachment 9467658 [details]
Bug 1949742 - Use will-change in the urlbar. r=#theme,#urlbar-reviewers

Beta/Release Uplift Approval Request

• User impact if declined/Reason for urgency: See bug 1949528
• Is this code covered by automated tests?: No
• Has the fix been verified in Nightly?: Yes
• Needs manual test from QE?: Yes
• If yes, steps to reproduce: On macOS, go fullscreen and hover over the menubar.
• List of other uplifts needed: none
• Risk to taking this patch: Low
• Why is the change risky/not risky? (and alternatives if risky): trivial css fix
• String changes made/needed: none
• Is Android affected?: No

Comment 5

[Donal Meehan [:dmeehan]]

Comment on attachment 9467658 [details]
Bug 1949742 - Use will-change in the urlbar. r=#theme,#urlbar-reviewers

Fx136 is now in release.
Moving uplift request from beta to release for possible inclusion in an RC respin or later dot release.

Comment 6

[Daniel Bodea [:danibodea]]

I can reproduce this issue in Nightly v135.0a1 (2025-01-06) and Nightly v137.0a1 (2025-02-20) and I can verify the fix in Nightly v137.0a1 (2025-02-24) and Nightly v137.0a1 (2025-02-25). Testing was performed on MacOS 11 and MacOS 14 aarch64.

Will keep an eye for a possible uplift for verification.