Skeleton wearing custom player head results in floating Signs & Mobs, black Screen and Crash

Can confirm floating signs, floating squids, but no black screen.
Game Console is spammed with:

[19:13:52] [Client thread/ERROR]: @ Post render
[19:13:52] [Client thread/ERROR]: 1283: Stack overflow
[19:13:52] [Client thread/ERROR]: Couldn't render entity
java.lang.StringIndexOutOfBoundsException: String index out of range: 2
	at java.lang.String.substring(String.java:1950) ~[?:1.8.0_25]
	at cvw.a(SourceFile:65) ~[1.8.1.jar:?]
	at cvw.a(SourceFile:53) ~[1.8.1.jar:?]
	at cnw.a(SourceFile:78) ~[1.8.1.jar:?]
	at csh.a(SourceFile:86) ~[1.8.1.jar:?]
	at cqv.a(SourceFile:411) ~[1.8.1.jar:?]
	at cqv.a(SourceFile:170) [1.8.1.jar:?]
	at cqz.a(SourceFile:40) [1.8.1.jar:?]
	at cqz.a(SourceFile:15) [1.8.1.jar:?]
	at cpt.a(SourceFile:294) [1.8.1.jar:?]
	at cpt.a(SourceFile:259) [1.8.1.jar:?]
	at cpt.a(SourceFile:226) [1.8.1.jar:?]
	at ckn.a(SourceFile:591) [1.8.1.jar:?]
	at cjh.a(SourceFile:1231) [1.8.1.jar:?]
	at cjh.a(SourceFile:1136) [1.8.1.jar:?]
	at cjh.b(SourceFile:989) [1.8.1.jar:?]
	at bss.at(SourceFile:906) [1.8.1.jar:?]
	at bss.a(SourceFile:317) [1.8.1.jar:?]
	at net.minecraft.client.main.Main.main(SourceFile:124) [1.8.1.jar:?]

WOW i test that!!! this is very weird

EDIT
i confirm the black screen but not the crash :c

EDIT² the return of EDIT -

wwwwwwoooooaaat man my games frezze and lag the entity is very strange!
i have java 8 64bits and this is so space!

You have to press ESC and then press where the disconnect button is

Probably fixed with MC-73731. Can you reproduce this issue in 1.8.8?

Ticket resolved as incomplete, because no answer in a reasonable amount of time (1+ year), if it still happens, please update the ticket.