Firefox 社群討論區

I have been using Firefox for awhile now and something weird is happening. I can't close tabs by clicking on the 'x' on the tab. I also can't use the back arrow and the refresh button. I can right click and close tabs that way and the bookmark bar works. The problem seems confined to the top two bars. Thank you.

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

I've recently sync'd my PC bookmarks etc to my android tablet and since then web sites that previously remembered me now keeping asking me to log in. BBC news, FaceBook are examples.

How to fully load a 1-hour long video directly? Now when watching videos, only a short section can be loaded, and it will stop loading after about 5 minutes. After watching the video, the subsequent content will continue to load. How to fully buffer a video in the background while pausing it?