I was using the brave app watching youtube this morning in mobile mode like a normal person. I go to my subscriptions and all of a sudden it's locked in desktop mode.
I checked the settings to make sure I didn't accidentally select retrieve desktop site and I hadn't. When I try to manually input the web address m.youtube.com, it automatically changes to www.youtube.com/?app=desktop.
Never had this issue with the app before and the only site I see it happening to so far is youtube.