Thanks for that. Yes, it works. I wish I'd known that before doing a System Restore! I didn't even know it was a Firefox update problem until I realised it wasn't happening on other browsers. At least they're sorting it.
In desperation, I tried a System Restore on my PC. Took it to a restore point only 7 weeks ago, when everything was fine. Not added anything since. After that, I was logged out of my Firefox account and had to reset it - which meant that I lost al...
Lots of people are having the same issue since the 113 update. I got mine on 10th May and now cannot view a video on full screen without the border around it.
Same here, too. After years of using Firefox, my video viewing on Netflix, ITVX, YouTube and Amazon Video is now being ruined by this border. Firefox need to fix this pronto, or I'll find another browser.