Hi Mojang!
I (and i think many other players) discovered a bugg with the Polar Bears in the 16w20a (1.10) snapshot.
If you hit / push the Polars Bears, next to a wall, they will go through it.
I don't think this has to do something with my PC 😛
Here's a video:
https://twitter.com/just_pjotr/status/734457680832659456
// Thanks for using video from Pjotr Staver - @just_protr
I hope it'll be fixed in the next snapshot! 😃
King regards,
Iraj
Cannot reproduce in 16w20a. In the video, the polar bear may have been in the wall to begin with.