Sentinel of Purity Buggy AI

Normal minions focus down the monster near where you casted your last spell, the sentinels don't. As a matter of fact they run away from closest enemy constantly towards whatever is furthest away.

They do this even if supported by predator and mark is currently on a target.

https://youtu.be/qH6QumZRcJg Here I recorded 3 different instances of this, the 2nd is the most evident.