This is not a bug, it is more of a request. Was not sure whether to set "Feature Request" or "Virtual Arsenal" category.

Please add another parameter to ["Open",true/false] spawn BIS_fnc_arsenal (maybe ["Open",true/false,true/false] spawn BIS_fnc_arsenal). That way you could call VA without Voice, Face and Insignia but have it display all the weapons.

I am aware of ["AmmoboxInit",[<box>,(<allowAll>,<condition>)]] spawn BIS_fnc_arsenal but that requires an object which is not an option in certain situations.