YES!! As melee DPS/tank I spend half my time in combat staring at monster crotch or chasing monster ass.  

Velhari hitbox in particular is bad because she uses a player model I think, so has a normal player-sized hitbox instead of a proper boss hitbox.  

My favorite is when I’m poisoning the boss, but I somehow end up behind them in their hitbox, so the boss walks backwards. IIRC Garrosh did that a lot.