Immortal enemies instances and enemies stuck in one animation after death

I dont know if this was reported already but i had few bugs that occured:

1. Immortal enemy instance
On act 2 in the caverns right before map where you have first encounter with king- While roaming the caverns i decided to go quickly and kill the boss, i didn't kill few enemies on the way but that one had very long focus on me. I entered the room and beat the boss and upon opening the doors the enemy was waiting for me, no matter how many times i killed him, he went back to life as if nothing happened. My bro joined and beat every mob on the map to see if someone was resurrecting him but that wasn't he case. We were killing him for good 10 minutes but nothing have changed. short video from this situation:

https://www.youtube.com/watch?v=18dmzpKg9co

2. Enemies stuck in one animation after death
I mean, there's nothing much to say, it is recurring rarely but it happened to me on every act with few enemies. Short video of this:

https://www.youtube.com/watch?v=9yYtgVT06ko

Also i encountered another problem:

While fighting this chick from ACT3, first boss after going back in time:

1. if i roll while being in the left down corner in the same time when the warriors with the shields procceed to move making the area smaller i can get stuck (and i did)
2. when warriors raise their shields while the boss is in animation to make aoe attack, if he (boss) gets pinned, enemies stay in this position unchanged till the end of the fight.

Most prevelent bug was with enemies not exiting 'run' animation after the death