Put the summary of the bug you're having here
What I expected to happen was...:
Mobs would walk normally.
What actually happened was...:
Mobs are walking sideways and backwards.
Steps to Reproduce:
1. Play Minecraft normally...
2. Find a passive, hostile, or neutral mob.
3. Watch them walk. (Best to use a passive mob like a mooshroom or pig and lure them.)
I'm seeing this as well. Only on multiplayer, though—SP is normal for me