Diễn đàn hỗ trợ Firefox

I used to be able to scroll to the bottom of my Youtube subscription list, to see the very first posted videos of all of my subscriptions, going back to the first days of Youtube in 2005. Granted, not all of the videos would show up, and I don't know if that is a Youtube problem or a Firefox problem, but most of the videos would be there. Now, after going back less than a year in the archive, the scrolling just kind of peters out. Firefox becomes unresponsive to any key press or mouse click, and all I can do is quit the program. What has changed? Has Firefox gotten even worse at memory management? it was always a total pig with memory, but has it reached the point where it just plain malfunctions and can't recover? If that is the case, then Firefox devs had better get their spit together and work on optimization. I really don't want to have to start using Edge, thank you, no. I only use Edge to view PDFs.

It used to be possible to set the colour of a container to black, although I can't remember how I did it: I think it was somewhere reachable from the preferences page. Facebook container still sets its colour to black on installation, so the black colour is still there, but I can't set black colour for a container in the Manage Containers dropdown.

I'm running version 8.1.2 on 115.3.1esr (64-bit) for openSUSE Leap 15.5 (and it would be much easier if I could copy this information from the Help-<About page). </p>