3D modeled items of resource packs are rendered strange when holding an affected item in the hand.
The render bug appears in 3rd person perspective and when you see another player.
In previous versions before 1.8.2 and 1.8.3 the bug doesn't appear and the 3d modeled items are displayed correctly.
Environment
Windows 7 64 Bit
Java 1.8.0_31-b13
More screenshots needed. Hard to tell exactly what's going on with that view.