When you put the skeleton skull in the item frame. It not render inside of skull.
Environment
OS : Windows XP (x86) 5.1 Service Pack 3
CPU : Intel(R) Pentium(R) 4 CPU 2.80GHz
RAM : 1 GB DDR RAM
Java : Java Development Kit 1.7.0 Update 65 (Used for making my mods)
OpenGL : Intel 845G GL Version 1.3.0 - Build 4.14.10.4342
Technically a duplicate of MC-63989 but also affected because of MC-65909