Firefox gemenskapsforum

Hello, ever since the latest update on my Firefox account on my I-Mac whenever I try to watch videos on YouTube they start and you watch about 30 seconds of it then you get the white arrow circle. You have to click on the timeline just in front of where it stopped for the video to continue. The video will continue for about 20 seconds and then freeze again. Then you click in front of where it froze on the timeline and it will continue for another 20 seconds. I have stopped using my preferd web browser FireFox and now have to use Safari. Please help!

I noticed recently that my Firefox changed, now when I click on the search/url bar at the top of the screen it opens into this full window sized search bar that sits at the top of the screen which is really bothersome. I also noticed that the close and minimize icons which are normally at the top right of the screen moved to be pushed inwards. I cannot tell if this is some issue with my Arch install, or a theme, but I tried switching to other themes in Firefox that do not use the system stuff and it seems to still be an issue? Could it be something else? I am totally at a loss as to what caused this and how to fix it, if I need to do something else on my system I can do more troubleshooting as well. (I have included two screenshots showing what I mean)