Witches drink potions on NoAI:true

Here's the summon command if you want to recreate this bug:

/summon witch ~ ~ ~ {NoAI:true,Health:1f}

Then you should be seeing the Witch drinking a healing potion even though she's not supposed to do anything at all.

Zombies/Skeletons/Phantoms are burning during daytime on Invulnerable:true

/summon skeleton ~ ~ ~ {Invulnerable:true,Health:1f}

And so on.

They all have one thing in common → 'Health' is defined.