Soul Reaper vs Kongor, we know who wins. (now fixed)

The other day one of our visitors commented on our Soul Reaper hero page.
This comment basically stated that Soul Reaper’s ultimate (Demonic Execution) worked on Kongor.
Intrigued we tried it out and it worked.
What this means
-With a Soul Reaper on your team it will take half the time to kill Kongor.
-Soul Reaper’s Ultimate is now the highest damage dealing spell in the game reaching excess of 9k damage (even more with Staff of the Master)
Should it be fixed or was this intentional?
We think this is a bug, it’s implication is fairly huge, making it possible to kill Kongor in under 10 seconds with a reasonably leveled team. Making the dangerous task of killing Kongor, while watching your backside, a breeze.
In terms of fair play and balancing we think Soul Reaper ’s ultimate should be corrected as to not deal damage to Kongor.
Either way, whether this “bug” is intentional or an accident, Heroes of Newerth player’s will prioritize Soul Reaper over other heroes as to give their team the advantage.