When in creative mode, trying to click and release an item out of your inventory with the mouse, as to
drop it on the ground or into a hopper, may disappear. The fix is to close and reopen the launcher. This
bug does not occur 100% of the time.

What I expected to happen was...:
Item falls to the ground and turns into an entity

What actually happened was...:
Item disappears

Steps to Reproduce:
1. Open a map in creative
2. Press E to enter the inventory