Incinerate totem AI bugs

I've played several pre-rework Incinerate totem characters in the past, and I think the reworked Incinerate totem AI has some problems. I see two issues:

1. When totems target an enemy and start channeling, they lock on to where the enemy initially was, and don't track it as the enemy moves. Video showing off totems blasting a wall after a Tormented Spirit moves out of the way: https://www.youtube.com/watch?v=50NaQT2csa0

2. Totems stop channeling after their target dies. Often the totems' target is the closest enemy to it, so that enemy could die before the totem has fully ramped up its area and damage - the resulting released wave isn't large/damaging enough to finish the farther off enemies in a pack. Ideally totems would keep channeling if there was another target in range, even after their target dies - this is also how pre-rework Incinerate totems worked. Totems would still always release the channel after reaching max stages.