Demon Form crash when casting spark and calling portal

Hey folks,

Steps to Reproduce
* Be in demon form
* Have portal bound to a key
* While holding the mouse button 1 when (for casting spark) press the portal button

Expected Behaviour
* Character should stop casting, exit demon form and create portal

Actual Behaviour
* Game crashes

I have been able to pretty consistently crash the game this way. If you need further information, please let me know.

best
-Martin

It's not just spark, same behavior with Hexblast and with Essence Drain. Cast very close to creating a portal, and you'll crash.