Game crashes every time I use Disengage while effected by Ancestral Cry

As the title says, when use the warcry Ancestral Cry and do a backflip with Disengage, my game crashes instantly and closes down. I didnt notice the combination until I reached tier 12 maps, and have certainly used the two before without issues, but after three reboots, I've perfectly performed the crash every time, with no monsters on the screen and minimal particle effects from anything else.