1925244 - URL bar panels/doorhangers appear on the second display when in full screen mode and the navigation toolbar is hidden

Status: NEW

(Core :: XUL, defect)

Description

[Bianca Hidecuti, Desktop Test Engineering [:bhidecuti]]

Attachment: video showing the issue

Found in

• 133.0a1 (2024-10-16)

Affected versions

• 133.0a1
• 132.0b8
• 131.0.3
• 128.3.1esr

Preconditions

• Have the “browser.fullscreen.autohide” and “signon.rememberSignons” prefs set to true in about:config
• Have a second monitor connected and configured to be positioned above the main display

Tested platforms

• Affected platforms: Windows 11, macOS 14.7, Ubuntu 22.04
• Unaffected platforms: none

Steps to reproduce

1. Enter full screen mode on the main display (F11 / Fn+F11)
2. Navigate to a website with a login form (e.g. Facebook, Wikipedia)
3. Enter some credentials and press the “Login” button
4. Observe the position of the “Save password” doorhanger when the navigation toolbar is hidden

Expected result

• The “Save password” doorhanger should be displayed on the top part of the main display

Actual result

• [Windows, Ubuntu] The “Save password” doorhanger is displayed at the bottom of the second display
• [macOS] The doorhanger is not visible when the navigation toolbar is hidden (it is when hovering over the toolbar)

Regression range

• Not a regression since I am able to reproduce it way back to Firefox 52.0a1 (at least, not a recent one)

Additional notes

• See the attached video
• The issue is not reproducing if other display arrangements are configured (side by side, below)
• I was also able to reproduce the issue for the Protection Panel, Connection Secure Panel, App menu as well (it is a bit trickier to replicate since the navigation toolbar needs to be hidden to observe the issue)

Comment 1

[Bianca Hidecuti, Desktop Test Engineering [:bhidecuti]]

Attachment: Connection secure panel displayed on the second display

Comment 2

[:Gijs (he/him)]

This is an issue with XUL popup positioning so moving over there.

Comment 3

[BugBot [:suhaib / :marco/ :calixte]]

The severity field is not set for this bug.
:enndeakin, could you have a look please?

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