Not a bug.
The church has always granted large ROF buffs...even back in vCOH.
However, the new ROF needs to be toned down a bit. Though this large ROF could be good for anyone planning a defensive map in EIR.
The buff hasn't ever been this high though. Entire squads die within seconds. That's a bug if I've ever seen one, as it's a feature that isn't working the way that it is intended.
@Steve
No, that church is the only place where it does that AFAIK.