Bug
When you throw an item (Ctrl+q), there is a chance that it will not be shown client side at all. The chance of the item not being shown seems to increase with a full stack (as shown). There were no console errors shown.
MC-126460
Disappearing Thrown Items
Resolved
Awaiting Response
0
I never saw this before on 1.12 or other previous versions, but I don't know for sure that it definitely didn't.