No AI Mobs can be pushed by players in 1.9

No AI Command generated mobs can be pushed by players

The mob should stay in his place...
so the mob dont move and can be transpassed

but when you touch the mob, it got pushed by the player
so it get out of its place and break my map...

Steps to Reproduce:
1. Generate

{NoAI:1}

mob
2. Push it
3. and you have a map breaking BUG!