widget get_name() not working the way it used to

[Damon Register <damon w register lmco com>]

I am having trouble with the output of Gtk::Widget::get_name().
In the past I have been using the get_name() to retrieve the name
of the widget as defined in the Glade file.  If I had the following

    refGlade->get_widget("idc_quit", idc_quit);

then I would get the string "idc_quit" from

    idc_quit->get_name()

Now (with gtkmm 2.22) I get gtkmm__GtkButton returned from get_name()

Is this now broken or am I unfortunate enough to have been using an
unintended/undocumented feature of gtkmm in the past?

Damon Register