In fcl-passrc, PasWriter.WriteModule is unable to show default parameter values in procedure/function declarations

In fcl-passrc, PasWriter.WriteModule is unable to show default parameter values in procedure/function declarations.

For example, with the following unit

unit Prog;
{$Mode ObjFpc}{$H+}

interface

procedure Proc(X : integer=5);

implementation

procedure Proc(X: integer=5);
begin

end;

end.

PasWriter.WriteModule gives the following output:

unit Prog;

interface

procedure Proc(X: Integer);

implementation

procedure Proc(X: Integer);
begin
end;

end.

See attached zip archive to reproduce. test.zip