Deleting items using the drop key while a tab is open in the creative inventory plays hand animation, even if the item isn't dropped

The bug

Caused by the fix of MC-160897. Pressing Q while one of the tabs of the creative inventory are open will display hand animation, even though you deleted the item instead of dropping it. This is likely an unsuccessful interaction which it shouldn't be displaying the player animation.

How to reproduce

1. Have a random item in your hotbar
2. Click on a tab (Except for "Survival Inventory" and "Search Items"), such as "Miscellaneous"
3. Point your mouse cursor in the item and press Q (For a whole stack, do Shift + Q)
   → After pressing Q the item is deleted, but the hand animation plays still, despite not dropping anything at all.

Very confusing to understand, see attachment video below.