[iOS] Game Crash after Wraith attacking

Hello RE Team,
Short version:
In a Match I am attacking a unit with my Wraith and after he killed it the game crashes.
 

Some more Details:

We play the one crystal map.

Opponent:

• Council
• He has in reinforcement: 1 wizard, 3 shields, 1helmet, 2 potions, 1 sword, 1scroll, 2 potio
• He has on the field: full hp knight, just delivered healer and 2 just revived healers (both 400hp)
• On the Placement Tiles he has, one revived healer and a full hp one

Me:

• Dark Elves
• On the field: full powered wraith nearly full upgraded: 600 atk, 1265 hp, sword, potion, helmet. 2 healers (one damaged) and 1 necro (damaged)
• On the Placement Tiles on full hp healer.

Describing the situation:

• His Turn: Placing new healer, reviving the last healer and attack with both healer my wraith

When I attack one of his healer or both and kill them, see my hp get healed and click again (tap) on my wraith then the game crash. If you need more just ask
PS: I get more and more sure, that it happens because of killing the unit on the placement tile, directly after hitting the unit with the wraith and then clicking on my unit crash the game!