Ammo selection on Ground vehicles - PS5


I have the issue that, specifically on the Begleitpanzer 57, I can’t select AP-T plus HE-VT.

The User Interface gives me 2 Ammo options for the 57mm gun, AP-T and HE-T.

I’ve tried to work around the issue through the test drive selection menu, but that doesn’t work anymore.
Does anyone have a working solution?