Seems to me that Aspect of Conflagration is removing the Burning DoT on target when it explodes, making burning damage worse since it’s removed in intervals.
Tested this on the boss dummy with Incinerate and some other burning damage procs. Some burning damage can be seen on the dummys HP bar until explosion triggers, then the DoT area on HP bar turns back to normal HP, burning stops, and explosion does seem to help the boss rather than you as a player.
Is this a bug or intentional?
On my other characters (not sorcerers) similar effects seem to affect both the target and the mobs around, not just the mobs around while kind of “healing” the target mob.