I tried their support a few times. Since the bugs are software-only, an RMA probably wouldn't have fixed anything. They took the bugs, said they stuck them into their backlog, and then didn't do anything about them. The bugs got swapped out for other bugs when Android 12 came around.

The biggest two bugs I had before were that the notification toggles disappeared ~1/day and I could only get them back by repeatedly changing the user on my phone. The other one was that video wouldn't work in split screen.

With Android 12, both of them are fixed, but now my screen turns completely black whenever a new notification appears. Also my mobile data connection disappears ~1/h and only appears again if I manually toggle mobile data. Sometimes when using split screen, the phone gets completely stuck for ~30-60secs. The nav bar also sometimes just disappears. ~1/day the recents button on the navbar loses it's function and requires me to reboot for it to start working again. GPS randomly dies as well and only works again after a reboot. That's especially fun when you are currently using your phone for Google Maps while driving.