Hello I'm Korea Galaxy W Android 4.3 device Mcpe player.
I found texture error.
(From I settled nomal texture.)
For example, Obsidian block is Looks like Observer block.
(I guess it's overlay display)
Anyway, it's part of texture error. (I looked many blocks.)
You can found that error form that picture as I said.
Ps: I try to restart mcpe lot of time, it's still looks like it.
So,fix this problem ASAP please.