Items sometimes become stuck in the crafting grid

Steps to Reproduce:

1. Move a stack of items from the Creative inventory into the crafting grid
2. Move another stack of the same item type into the same crafting grid slot
3. Try to move the stack of items out of the crafting grid

Observed Results:
The stack of items cannot be moved.

Expected Results:
The stack of items should be able to be moved.

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Original Description:
The video will explain it best, but basically if you accidentally put more than 1 stack of an item into a slot in a crafting table you cannot move that item out of the crafting table unless you exit the world and reenter it.