So after farming one of the recent trials for the Kazpian set, I was surprised when activating det siphon early to burst a corpse that it didn't proc it. I thought it might have been because it was a recent set it might not have counted or something but after testing other sets like Nerien'eth, Auroran's thunder set and other gear that procs off of any direct damage done, the explosion from detonating siphon just doesn't do anything. Which is odd since it does get boosted from the MaA champion point.
Not sure if the skill just isn't acting properly or if it has something to do with corpses since everything corpse related is a buggy mess.