Youtube won't autoplay my playlists. 2-3 days ago it worked just fine. It starts the first video, but immediately stops after that ends. I have to manually click on a song in the playlist for it to start. Shift+N and Shift+P shortcuts not working either. Updated my FF, nothing. Disabled addons, nothing. Tried Safe Mode, nothing. Uninstalled FF, pc restart, installed an older version (66.0.5) ,nothing. YT playlist woks just fine on mobile app and with Chrome browser on pc but not with FF.