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Bug 2086366 - Keep address bar suggestions aligned during macOS fullscreen toolbar shifts. - #420

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Sehat1137 wants to merge 1 commit into
mozilla-firefox:mainfrom
Sehat1137:fix/macos-urlbar-fullscreen
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Sehat1137 wants to merge 1 commit into
mozilla-firefox:mainfrom
Sehat1137:fix/macos-urlbar-fullscreen

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@Sehat1137

@Sehat1137 Sehat1137 commented Oct 28, 2026 •

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When the macOS fullscreen titlebar appears, the toolbar moves down but the top-layer suggestions can stay in place and cover the address bar input. Apply the toolbar shift to the suggestions when transform-aware anchor positioning is disabled.

The test covers both values of the preference, Nova on and off, and resetting the toolbar shift.

Bugzilla: bug 2086366. The same patch is also under review in Phabricator D337411.

Validation on macOS arm64:

  • Before the fix, the new test fails four position checks.
  • With the fix, the new test and the existing popover-state test pass: 54 checks, no unexpected results.
  • Scoped ESLint, Stylelint, manifest, whitespace and license checks pass without warnings.

The tests call the toolbar shift handler in a headless browser; they do not exercise the native titlebar animation.

Screenshots from the affected Firefox 158.0.1 profile: before revealing the titlebar and after revealing it.


Lando: link
Bugzilla: bug 2086366

⚠️ This pull request has 3 warnings.
🚫 This pull request has 1 blocker.

…creen toolbar shifts. r?#urlbar-reviewers,#desktop-theme-reviewers

When transform-aware anchor positioning is disabled, the top-layer view does not follow the toolbar translate. Apply the toolbar shift to the view in that configuration.

Differential Revision: https://phabricator.services.mozilla.com/D337411
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(Automated Close) Please do not file pull requests here, see https://firefox-source-docs.mozilla.org/contributing/how_to_submit_a_patch.html

@github-actions github-actions Bot closed this Oct 28, 2026
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