1884537 - Menu bar and dock disappear on 1st screen when YouTube is fullscreen on 2nd MacOs

Status: RESOLVED DUPLICATE of bug 1862223

(Core :: Widget: Cocoa, defect)

Description

[alex]

Attachment: Screen Shot 2024-03-09 at 4.00.38 PM.png

User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:123.0) Gecko/20100101 Firefox/123.0

Steps to reproduce:

MacOs with external screen connected.
Open youtube.com in firefox on second screen (windowed).
Click fullscreen button in youtube interface.
Make another firefox window active on 1st screen. (windowed)

Actual results:

Menu bar and dock disappear on 1st screen.

Expected results:

Youtube should work fullscreen on second monitor, without affecting dock and menu bar on first monitor.
There is a workarround: when I make Window fullscreen in macos before clicking youtube fullscreen button everything is working correctly.

Comment 1

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

The Bugbug bot thinks this bug should belong to the 'Core::Widget: Cocoa' component, and is moving the bug to that component. Please correct in case you think the bot is wrong.

Comment 2

[Stephen A Pohl [:spohl] (OOO until 4/29)]

This will be fixed by enabling native fullscreen.

Comment 3

[Stephen A Pohl [:spohl] (OOO until 4/29)]

This will be fixed in Firefox 124, scheduled to be released on 3/19.