Snipe won't release/shoot when holding move only key

I'm using snipe with burning arrow of vigour, the issue is that the shooting anymation for snipe gets cancelled when holding the move only key. It happens ofter but not all the time.

Steps:
1.- Channel snipe to any amount of stages
2.- Press/click and hold move only key, snipe will not always shoot
3.- When trying to rechannel snipe without releasing the move only key snipe wont allways shoot/release