3 rare items after just a few kills -- Bug?

[ichigoyummy]

Please fill in as much as you can :

11:15-ish AM EST

Server Name: Klaipeda

Team Name: Grumbleberry

Character Name: Macaron

Bug Description :
I killed less than 10 Vubbe Fighters, but received 3 Vubbe Fighter Bloods. Seems like a bug.

Steps to reproduce the issue :

1. Go to Crystal Mine 3F
2. Kill multiple Vubbe Fighters

[63scaur]

Super luck or DPK bug, you choose.

[_DrRM_]

There will be some angry bots and afk necros looking forma you…

Jk…

Is hard to tell if bug with so many possible reasons