Disappearing items in vault

I had 3 honeybadgers, 2 in my inventory and one in my vault. I had honey like secondary weapon and i put it on another honeybadger in my vault. After that one honeybadger disappeared, it wasn't on ground, it wasn't in my inventory and it wasn't in my vault too! I had this problem some time ago but only with my detonator (not expensive like honey). Any ideas what happened? And can someone try to fix it Thanks for any help

Okay, thanks, but how can i get my item back?

Thank you!