During The 5th wave when betsy cutscene play her name will block our MP bars. Please Fix
I had this problem too! Also, in the final round where I actually fight BETSY; I collect the mana gems so I can upgrade my turrets BUT it doesn't update in the game. So essentially, I didn't get any more mana/ green gems.
The nameplate was visible for the entire round after the cutscene, including build phase and the fight. It finally disappeared when I went back to tavern.