Alt behavior for skills linked to mine supports

I'm not sure if this is intended or not. But it's rather frustrating.

When linking High Impact Mine with Glacial Cascade, there isn't an option for alt behavior to drop them on your characters location. Because of this and the way throwing mines works on PS4, you end up throwing the mines directly at or behind mobs. This causes the spells knockback to push monsters towards you, while hitting them with the lowest damage area of the spell.

Can alt behavior be added to this combo, or can auto targeting be removed from mine throwing?