Hi Konstantin;
That is correct and no, there is no workaround. The Menu Bar automatically uses the O/S's default assigned "System Font" with an 8 point font size.
However, there is a ticket in the Support System that has now been transferred to Engineering already as an "enhancement" request to have the PB runtime allow App control of the menu bar's font and point size. This is a recent ticket, so I have no idea yet what the status is currently on Engineering's "ToDo" list. They are super busy right now on PB & PS 2022. That includes updating PB's use of VS2010 C++ to a current Microsoft C++ version for PB2022.
Regards .. Chris