Mmm, I cannot either now, I was on Vulcanus in 2.0.14, no mods besides base, space age, quality, and elevated rails. Sorry for the inconvenience if you still can't reproduce this still. We didn't use editor or anything, we were messing around with demolishers trying to kill one before this happened ...

I assume this is a bug, all you do to reproduce it is just, have a multiplayer session hosted, and then click another player while an admin and place a random item into their weapon slot.