Barrage spell gem cooldown calculation is incorrect

Barrage says "(1215–1500)% of repeated Skill's attack time is added to this skill's cooldown, to a maximum of 30 seconds".

I tested this with all the bow skill gems. It appears that barrage's cooldown only changes with snipe or detonating arrow. i.e. Barrage + short charge snipe = small cooldown and Barrage + full charge snipe = long cooldown on barrage

All other bow skills (e.g. lightning arrow, bow shot, ice shot etc.) will put barrage on a cooldown as if it was used with a skill with an attack time of ~0.83s regardless of the actual attack time. You can try skills with different base attack speed, equip quil rain or spec attack speed on the tree. You will change the attack time in your skills tooltip, but this will have NO effect on barrage's cooldown.

Either this is intended and Barrage's tooltip should be changed, or this is a bug.

Agreed. I was messing with some builds, granted wasn't a high level, but the barrage cooldown was essentially the same for an attack with a much longer attack time vs just my bow shot skill, which was quite fast. for auto attacking basically makes barrage worthless, cause I could just Auto attack faster than using and waiting for barrage to go off. shame, hope it gets adjusted.