[Bug/Glitch] wither skelly always glitching out of the grinder!

[theloneking]

this is what it looks like inside my nether grinder. http://prntscr.com/ct6wi4
this is the area where you hit them. http://prntscr.com/ct6x01

and after killing some wither skelly, they glitch out like this. http://prntscr.com/ct6x64
is there a fix for this? i tried diffrent blocks except bedrock, and they still glitch out like that. thanks!

@Deviate @Boomclaw

 

[Deviate]

I tried a few things myself without luck, @Boomclaw says he can't fix it.

 

[theloneking]

I tried a few things myself without luck, @Boomclaw says he can't fix it.

i see. well, that happens. thanks dev. btw, give me your head in OPSB. :) thanks!

 

[Deviate]

sire find me ingame