PigZombie Ticking entity crash

The game crashes in a creative test world when many zombie pigmen being agroed towards the player. Possibly due to trying to pathfind to a player that is not reachable. Some small stuttering is noticeable on the mobs, but not as much as in 1.9. The game crashes after about 20 seconds of this.

Edit: Is reproducable, but takes about a minute before it crashes.