Inverting vertical flight - aircraft is bugged

I am basically trying to fly inverted rifle aim on the heli and jet (only the Y axis is inverted).

If I change the Invert Vertical Flight - Aircraft setting to ON (under edit vehicle settings -> pilot) it works fine on the jet as intended. But the attack heli is suddenly NOT inverted. If I reverse the setting, the attack heli is inverted (which I want) but the jet is no longer inverted.

Either it has to be a separate invert flight setting for the heli vs the aircraft (=jet) or it should be inverted the same way with the same toggle.

Could you please look into this?

Thanks!