Snap/Ice Nova + Frostbolt targeting issue

Currently I'm trying to play triggering Frostbolt with Cast on Ailment, but as my active skills are Nova+Snap, I can't aim with them properly with the controller - the game always prioritise frostbolts, no matter where they are going, even when I specifically use R3 targeting the enemy.

My Novas and Snaps always explode on Bolts, which makes this way of combat pointless. Is that a bug or it can be set in Targeting Mode? When using Automatic mode, both skills are not shown on the list.

Pls fix GGG.