(Sorry for bad english, I'm French)
Describe the bug
Somes armors positions are bugged when sneaking.

Expected behaviour

I updated an 1.7.10 pack to 1.12.2 but I saw than, when we sneak with some armors, the model position is bugged.
I think I found why, the armors with ModelScale argument in their files (pack/armorFiles/). are bugged.
I hope that you could resolve this quickly.

Screenshots
https://images.mathieubroillet.ch/?img=KDzl4.png

Versions (please complete the following information):

• Forge: 2838
• Flan's Mod: latest

UPDATE :

Following ChrisLane's request, here are the steps to reproduce the bug.

(Optional: First, you need to update 1.7.10 outfits (armors) to 1.12.2). Then make sure your outfits use the ModelScale X.X argument in their configuration file (pack/armorFiles/outfit.txt). If so, you will see, once in minecraft, that the model is badly positioned when the player sneak.

Here is the pack to test the bug:
PackDemoForFlans.zip

Regards.
Mathieu B.