When in creative-mode, a player can Pick up Items, even with a full Inventory. Those Items just seem to get deleted
Linked issues
Comments 2
That is not a bug, it is an intended feature so players in creative like test out a mob grinder or something, and kill everything with commands, don't need to somehow empty their inventory.
Hi there!
This is a duplicate of MC-8409. Just a quick search is all it takes to find a bug just like yours. Make sure to do this, then vote for, comment on, and follow the bug if it matches yours. It is the best way to save the moderators some time, and the best way for the bug to be prioritized by Mojang.
Unfortunately, however, this feature works as intended; it is not a bug.