Firefox Community Forum

When I watch videos in full screen using Firefox browser, the taskbar at the bottom of the system still appears below.And it blocks some of the operation buttons, making it impossible for me to perform operations such as "fast forward", "pause", "volume control" while watching the video。 It seems that we haven't achieved true full screen display.

However, this situation does not occur in other browsers.

What's going on here?

Since the most recent update a few days ago Firefox (on my desktop PC) has been looking and behaving differently. The bookmarks sidebar has disappeared and can't be brought back in its previous form. Selecting Bookmarks toolbar - always show' does nothing. There is no 'Back' arrow to return to a previous screen. I'm finding this new version almost impossible to use. Have I done something wrong? Can I go back to the previous version of Firefox? Regards, Peter

Started a couple days ago

Youtube works fine for everything, except when i try to watch a video, the rectangle where the video is supposed to be appears black during loading (normal) but then vanish.

checking the console i get a huge error that's just unreadable for me

it doesn't happen on edge, or in private navigation

turning every addon off doesn't fix the issue, and it does it even in "troubleshoot mode"

i haven't "refreshed" because i don't know what kind of data will be lost when i do that