One similar thing happened to me on windows 8 (except I wasn’t testing it, I lost everything on my pc that day because it didn’t just fail to update and restore…it just fucked my drive with it !), so it’s not even a new type of issue. Even windows 10 was fucked, had a friend who never used bitlocker, never even knew it was a thing, who got his pc encrypted by it after an update, unable to unlock the damn thing, every solutions failed and had no other choice but to wipe his drive. It’s crazy how bad and unpractical windows can be.

EndeavourOS is a good choice. I hopped from Manjaro to Endeavor myself a few years ago, never had an issue since. It’s the kind of distro you set up once and then it’s all done, you can forget about it, so much so that I hope I won’t have to install it on another machine soon…because I really don’t remember much about what I did back then xD