A couple of weeks ago I was cutting a piece with all 1080/29.97 footage from my Canon XF100 and I had complete program crash. Wasn’t doing anything too intense, just roughing in footage and some photoshop (single layer) titles. Relaunched and reopened the project and it just looked funny. Well, it had changed to 720p/25 and there was no options for changing it back.
Had to rebuild. No biggie as I was only a couple of clips into it. Haven’t had it happen again, but stuff like that just screams “beta”.