So my 10-man guild was putting a few attempts into the Blood Princes last night. The encounter is not that difficult in my opinion, just kind of chaotic. However, the problem I had was with the Kinetic Bombs. As a Warlock, I was the one making sure both bombs never reached the ground using my imp on one and my own spells on the other. On one attempt, though, one bomb exploded while I was running to the next. I was 99% sure I set my imp on it, and before I left I made sure it was quite a distance away from the ground, but I had my back turned to it so I didn't get to see it actually explode. The next time, I literally saw one of the bombs explode in the air, my imp again being the one keeping it up. The projectiles of the explosion were angled downward, so there was no mistaking it. Is there some sort of mechanic against minions being used to keep the bombs up or is this a bug?