When I /give myself some items while the inventory is full, the items drop. When I try to pick them up I can't do it a long time. Later it works like normal. Quiting and re-log doesn't fix the problem. It is reproducible.
is duplicated by
MC-124369In Survival Mode Items that have been dropped with /give because the inventory is full can no longer be picked up
MC-125974Cannot pickup item with owner tag even if the uuid matches