Since this update (April 2015), after about 5 minutes of playing, mobs start acting very strangely. They walk backwards, through walls falling through the floor etc. This happened with creepers, spiders, villagers, sheep, pigs, cows, iron golems. I haven't seen a zombie do this yet but, it may only be a matter of time.
This was observed during split screen play on xbox one, on our 6 month old world that we don't want to lose.
Any help, advice or information on a fix is appreciated.
am having the same problem, did you find any solution for this , or we have to whait for the next update? i usualy play with my wife on split screen and now we cat play at all , all the mobs are jumping around teleporting walking through walls and if i manage to kill one the drops go under ground