Tab key Inventory

I use the Open / Close Inventory function on the "Tab" key but in it the inventory only opens and does not close, I have already tested on other keys and the bug only occurs in that. I've already used the inventory on this key since version 1.4.7, I can not change

What I expected to happen was...:

Open and close inventory normally in Tab.

What actually happened was...:.

just opened the inventory and did not close.

Steps to Reproduce:
1. Go to settings and change the "Open/Close Inventory" key from "E" to "Tab"

2. Try to open the inventory

3. Try to close the inventory / chest / enchantment table / anvil ...