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YouTube gets stuck on full screen ONLY when already in Mac's full screen window

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I've only just recently had this issue: If I'm not already in full screen mode on my MacBook Air (Ventura 13.3.1), then I can enter and exist YouTube's full screen mode just fine. But if I'm already in full screen mode with the browser, then after going full screen with a YouTube video I can't exit. I can exit the full screen window, but then the video stays in full screen with no menu bar available etc. Instead I have to close Firefox and open again. See the attached image - I can change the size of the window but only the video screen appears. I can still use shortcuts (ctrl+tab) to navigate tabs etc.

I've only just recently had this issue: If I'm not already in full screen mode on my MacBook Air (Ventura 13.3.1), then I can enter and exist YouTube's full screen mode just fine. But if I'm already in full screen mode with the browser, then after going full screen with a YouTube video I can't exit. I can exit the full screen window, but then the video stays in full screen with no menu bar available etc. Instead I have to close Firefox and open again. See the attached image - I can change the size of the window but only the video screen appears. I can still use shortcuts (ctrl+tab) to navigate tabs etc.
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I've seen two other reports about Mac users stuck in YouTube video full screen but I didn't grasp this detail that Firefox or your Mac was already in full screen.

Do you mean the kind of browser full screen you can toggle using Command+Shift+F? Or is it a Mac feature, separate from any built-in Firefox feature?

If you close the YouTube tab (press Command+W to close the current tab), can you see other tabs? If so, and you restore the YouTube tab (Command+Shift+T to restore the last closed tab), does the YouTube page come back in normal view or full screen?

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jscher2000 - Support Volunteer said

Do you mean the kind of browser full screen you can toggle using Command+Shift+F? Or is it a Mac feature, separate from any built-in Firefox feature?

It's the kind that is toggled that way, yes, but it's also the full screen feature every program has in Mac, with the green expand button. Incidentally, I don't know if this is related, but right now even a non-YouTube window minimizes back to a view where Firefox has a weird bar on the top of it (see attached image with the bar over the tab).

jscher2000 - Support Volunteer said

If you close the YouTube tab (press Command+W to close the current tab), can you see other tabs? If so, and you restore the YouTube tab (Command+Shift+T to restore the last closed tab), does the YouTube page come back in normal view or full screen?

Once I'm having the problem of YouTube stuck in fullscreen, if it's the only tab then closing the tab with Command+W just leaves a blank screen in place of the tab, though I've noticed that the blank screen will eventually vanish. If I have another tab open, then it'll just revert to that normal tab. Then, restoring the tab does go back to normal view, not full screen.

EDIT: The same stuff applies, I've discovered, to videos in Twitter when I make them full screen from the already-full screen window.

由 joshuadblanchard 於 修改

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I don't know what that brown bar is in your screenshot. ??

If you close the last tab, resulting in closing a window, you could try Command+Shift+N, which is the shortcut to restore the last closed window.

I found a freshly filed bug report on this (https://bugzilla.mozilla.org/show_bug.cgi?id=1829403), but I don't expect much to happen with it until Monday. I found an earlier bug report that sounds relevant, but it was closed without providing enough information to be helpful because the user who reported it stopped being able to reproduce it (https://bugzilla.mozilla.org/show_bug.cgi?id=1824776).