Corpse explosion failing on slopes

1. Title: Corpse explosion failing on slopes
2. Reproduction Rate: all day long
3. Blocker? well considering this makes corpse explosion skill useless unless on completely flat surface, yes
4. Details: when trying to cast a corpse explosion, the spell will fail, not fizzle, fail to trigger, if it is not cast onto a completely flat surface, your character does the animation, you use the focus, but spell does no trigger
5. Steps to Reproduce: example, try to cast corpse explosion on any corpse that is on a slope or even just on the edge of a slopping terrain, the spell will fail

I saw other threads on this, but did not see a bug report;
suggestion make the target circle 3 dimensional and not just linear, keep the visible circle linear, but the functioning trigger of the spell knowing it is targeting a corpse, 3 dimensional with area above and below the visible circle and has no collision

 

Definitely needs to be a sphere or cylinder shaped effect.

Testing on slopes, I have found that if you center on a certain plane it will trigger. But I haven't found the relation yet. Certainly fails a lot.

Perfectly flat areas are far less buggy.

@Attenwood
This still being looked at by the Devs?

There is still a bug that it only hits one mob too. Seems more frequent with humans/elves