This is not a bug as much as ungodly annoying but whenever I find myself dealing with the devil enemies in the Devilish Drudgery or elsewhere, their reaction speed is frustratingly overpowered.
I'll have my shield up waiting for them to attack so that I can it them when they are not able to attack and all they will do is dodge back and forth or stare at me. Then the moment I lower my shield, they pick up their projectiles faster than my character can raise its shield. And this happens over, and over and over again.
A longer wind up time for their projectiles would be appreciated.
Wait for them to attack, rise your shield, right after they attack lower your shield and smash them :P
If they dodge, move closer, wait for them to attack,...
Repeat if needed.
Problem solved.
Have fun playing.