Block bug: when you make two slaps in to a block, the texture become bug like take chance who it see, chainging they position of the texture

Put the summary of the bug you're having here

What I expected to happen was...:
the texture of the slaps when it's is a full block the texture chance, taking another potition 

What actually happened was...:
take another texture the"slaps block" taking another potition, torning around  

Steps to Reproduce:
1. traform a slap in a block of slaps 
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