Bug Inventory Prerelease 1.7

When I put on a helmet (enchanted Respiration 3) on the area of helmet. Others areas are "dissapeared". And only when I point my mouse on them, they appear.

It makes the same "bug" with text of potion effect&duration.

What I expected to happen was...:
Nothing..

What actually happened was...:
Other "areas" disappear

Steps to Reproduce:
1. Put helmet in diamond enchanted "Respiration 3"
2. Other "areas" disappear
------Only when i point my mouse on them, they appear