Diễn đàn hỗ trợ Firefox

When I encounter an embedded video on a website that plays, an icon to toggle picture in picture pops up in the URL bar (see attached image). I don't use picture in picture, and for some websites which have an "endless scrolling" experience with videos, such as reddit or facebook, it is slightly annoying that while I am focusing the middle of the screen, something changes in the top right, making me think a tab has an update and changed title. I have the picture in picture controls turned off in settings (one with the id=pictureInPictureToggleEnabled in general, my Firefox is not English), I thought it would also make said button go away but it does not.

Recently, I've been noticing an issue with Firefox's built in Picture-in-Picture (PiP) feature. When watching media, such as a YouTube video, using PiP, the video runs as normal, but recently, the PiP completely breaks when I tab away from my Firefox window to do something in a different app. This wasn't the case a few months ago, so I'm not sure what changed to make this error happen. I had attempted to disable hardware acceleration to see if that was the issue, and nothing changes when it's enabled versus when it's disabled.