Can no longer see Monster HP bars

I've noticed something: Everytime the monster has an invicibility frame, the bar dissapears until you hit it again. If the KB animation is the invincible one (like elder wraiths), the numbers will probably hide the bar before it dissapears. Try it on regular monsters. ALSO, if you one hit KO them, the bar won't even show.

Knowing you, you must have tested it, but with this, you should be able to test it further.