"Tab" key does not work correctly as a inventory keybind

When you use your "Tab" key as your "Open/Close Inventory" keybind and you open your inventory with tab it doesn't allow you to close your inventory with tab. When this happens the only way to close your inventory is to press the "esc" key

What I expected to happen was...:
I should've been able to close my inventory with the same key that I opened it with.

What actually happened was...:
It did not let me close my inventory with the same key I opened it with.

Steps to Reproduce:
1. Set your "Open/Close Inventory" keybind to "tab"
2. Open your inventory with tab then try to close it with tab.