The bug

When you shift click any type of potion or an enchanted book, the item has a white square during the animation.

How to reproduce:

1. Get a potion or enchanted book
2. Shift click it
   There is a white square at the item when being moved.

Expected result: The item should not have a white square.

This is possibly caused by the enchantment glint, but other enchanted items are not affected. Only potions and enchanted books seem to be affected.