I'm running the latest version of Firefox (85.0 64bit) on Windows 10. Perhaps I could get help here. I can't login in either https://www.icloud.com/ or https://tv.apple.com/ Screenshots of the problem are attached here. In both websites I see the circle as it is trying to load (on icloud, eventually, get an error "iCloud encountered an error while trying to connect to the server"). I've tried to use these websites with Chrome and Edge and it works normally. Solutions I've tried but did not work: - cleaned cache and history; - turned off firefox protections against monitoring; - turned off uBlock Origin (it's the only plugin installed besides DuckDuckGo) - tried in private window, does not work as well Is this a known bug or/and is there any solution? I can try anything you will suggest to me, I really need to open these websites and I do not want to use any other browser besides Firefox.