Event Medals don't count Mana Burn as spell damage

I just wanted to file this bug report, so thank you!
Mana burn is not counted as spell dmg just as life steal was not counted as spell dmg.
This bug brakes the current world event, two of the best troops are useless.
Also I would like to link this here: Remove immunity to mana burn
It would be nice to use these troops to their full potential!