1848500 - Since Firefox 116, the fullscreen notification appears and won't go away when pressing media keys

Status: RESOLVED DUPLICATE of bug 1847901

(Core :: DOM: Core & HTML, defect)

Description

[Nikos Chantziaras]

User Agent: Mozilla/5.0 (X11; Linux x86_64; rv:109.0) Gecko/20100101 Firefox/116.0

Steps to reproduce:

I upgraded from Firefox 115.0.2 to 116.0. After that, when I press a media key on my keyboard (volume up/down, play, stop, etc.) while watching a video in fullscreen mode, the fullscreen notification pops up (for example "youtube.com is now fullscreen - exit fullscreen (Esc)" and never goes away until I exit fullscreen mode.

Something similar happens when I alt+tab out of firefox while the video is fullscreen. If I press alt and hold tab, the notification pops up. Same with the F12 key, which on my system is a global KDE Plasma shortcut key.

None of this happened in Firefox 115 or earlier.

I'm using Firefox on Linux (official Mozilla build.)

Comment 1

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

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

Comment 2

[Edgar Chen [:edgar]]

There's a bug similar to this issue, bug 1847901. Have you set full-screen-api.warning.timeout to 0 to disable the fullscreen notification?"

Comment 3

[Nikos Chantziaras]

(In reply to Edgar Chen [:edgar] from comment #2)

There's a bug similar to this issue, bug 1847901. Have you set full-screen-api.warning.timeout to 0 to disable the fullscreen notification?"

Yes, turns out it's the same bug. Please close this one as a duplicate then.

Comment 4

[Edgar Chen [:edgar]]

Thanks!