[Mobhack]

No need to fixate on the 222 since it is the only user of Weapon Class 19 and that is doing precisely what it is meant to do. Which is act as a limited firer at low altitude aircraft classes. Its for use on APC's autocannons, for MBT. Not really a WW2 thing.

The weapon class was really only meant for MBT APCs to allow them to bother helicopters. And it was originally designed not to close down if the vehicle was in buttoned up status - now weapon class 4 (flak) does not fully close down if suppressed, anyway. WW2 only has a few choppers to pop off at in the very late war period.

It will fire at helo classes and also it seems, spotter planes.
It will probably fire at gunships (not there in WW2?) and glider classes. (If not - I dont care, far too rare a use case to worry about.)

It will not fire at strike plane classes or level bombers.

So it is doing precisely what it is supposed to do, and that armoured car is the only WW2 user of the weapon class.

So no "bug" its just that you found an oddity and therefore no need to obsess on it any further.