Dropdown box no longer boxed ?

[rageworx]

As like this,

Fl_Scheme_Choice drop-down menu has no attributed ? or not boxed ? Only plane box (FL_FLAT?) appears.

[rageworx]

As Fl_Choice.cxx, there's default drawing box type is Fl_Boxtype btype = FL_UP_BOX | FL_DOWN_BOX.

But it doesn't affects even scheme selected GTK+ as like this:

[rageworx]

Tested with fltk/fltk origin repo, it's same. Maybe is it used to be my example ? https://github.com/rageworx/fltk-cpp-barcode/blob/2cdc7a96f75cc0050c8170bba2844e3116ce9539/src/main.cpp#L419C48-L419C48