Idk if that’s a bug or it’s intended, ‘cause it’s been there the whole time, but it started annoying me, so I decided to report it.
This (bug?) started appearing a very long time ago, so I don’t remember when.
When you kill items, their unlocalized names show in the chat (item.stick.name was killed).
Replication
Drop an item.
Use
/kill @e[type=item]
Hm, I can't reproduce ever since MC-73495 was fixed a while back. Would you mind attaching a crash report from a world in which this happens? (F3+C for 10 seconds)