In most places in the reportbug program, pressing enter is enough to "continue"
to the next screen.  However, on the first screen after starting reportbug,
pressing enter does nothing and throws the following GtkWarning:

david@Aya:~/HoN$ reportbug
/usr/lib/pymodules/python2.7/reportbug/ui/gtk2_ui.py:453: GtkWarning:
IA__gtk_widget_event: assertion `WIDGET_REALIZED_FOR_EVENT (widget, event)'
failed
  gtk.main ()

Hi,

the warning came from the old PyGTK interface (gtk2_ui.py, reportbug
6.4.x), which was replaced by a GTK3 one using GObject introspection;
that code no longer exists. Pressing Enter on the first page of the
current GTK UI (13.2.0) produced no warning in a test under Xvfb. Enter
doesn't move past that page until a package name is typed, which is
expected.

Closing; if you still see the warning with a current version, please
reopen with the output of `reportbug --ui gtk`.

Regards,
Sandro