Bloodwrack Shrine firing at 3x the rate of a Bloodwrack Medusa

I noticed this before 2.3, and if it's new it's probably since the IE launch. I'm almost certain it wasn't in WH2, and it doesn't appear to be reflected on the unit card anywhere.

As a result, it actually makes the Shrine finally feel like a tier 5 unit. They quickly deplete their ammunition, get a bunch of kills, and can join melee where they buff nearby units.

*Apologies in advance if this is actually a bug and the few Medusae enjoyers out there no longer get to 'abuse' it.*