Crossbow ammo-skills supported by Concoct or Ambrosia have 3 cost-triggers instead of 1

In version 0.4.0b, when crossbow ammo-skills are supported by Concoct or Ambrosia (all tiers), flask charges are consumed on these conditions:
- Switching between ammo types, including when the skills have full ammo.
- Firing a crossbow skill.
- Reloading a crossbow skill.

What I'd expect is the flask charges would only be consumed when the normal costs are paid to use a crossbow ammo-skill, which is when reloading the skill's ammunition.

Alternatively, only consuming flask charges per-shot would be entirely
reasonable, even if unusual for how crossbow ammo-skill costs are normally paid. Any solution that involves only paying on one condition instead of three would be greatly appreciated.

Repro steps:
1. Equip a crossbow and a life flask.
2. Equip the skill Permafrost Bolts, supported by Concoct I.
3. Add Basic Bolt, Permafrost Bolts, and Crossbow Shot to the hotbar.
4. Use a well to refill the life flask.
5. Alternate between using Basic Bolt and Permafrost Bolts to switch the current ammo type.
6. Watch for the life flask charges being consumed by switching ammo types, normally an action without costs such as mana or life.

I see this bug has been present in prior leagues, and a fix would be greatly appreciated. Apologies for creating a new thread, but I both wanted to provide clear reproduction steps, and to mark the bug as not being fixed by version 0.4.0.

I'm hoping this is helpful. Thank you for your time.

Bump, experienced this last league (0.3.0) as well.