Texture Bug while Sneaking

When I sneaking then are the Texture wrong.

What I expected to happen was...:
When You are sneaking in a different view from normal, with armor, then I expect that the Texture from the armor is sneaking too. 

What actually happened was...:
When I sneaking in another view with armor, then the Texture from the armor is bugging. The armor wasn't sneaking. The feets sink into the ground and the abdomen from my skin is looking out of the armor texture.

Steps to Reproduce:
1. You only press the Sneaking key.
2. Then you must go in another view(F5).