Just a bug I noticed. It didn't affect gameplay but, I was red during waiting for players and left the survival perk menu up. When the round started I was switched to blu but the survival menu was still there and I was able to select angelic for zombie team. It showed angelic pending. When I died it showed that I had the angelic perk but I didn't get the abilities the perk normally gives so it was fine. But perhaps you might want to change it so the menus can't pop up during waiting for players?