Duplicate Archer boss disappeared in CWK

Hello,

yesterday in one of my CWK runs the archer boss just disappeared when it was supposed to die. No Exp No MoN. It was probably last hitted with Meso Explosion. I will upload a screenshot later with ~servertime. But you pretty much just see us wondering what happened. 100% sure we didn’t get exp and no1 quick looted MoN or anything.

Is this a known issue?

Ty for looking into this! Can we get our last MoN?

Edit: Screenshot

 

Never kill bosses with mesos explosion to avoid no EXP no drop glitch

 

It wasn’t me using meso explosion but surely this shouldn’t be the „fix“ from a developer point of view

 

Here: https://royals.ms/forum/threads/zak-doesnt-give-exp-or-drops-occasionally.116830/