Warning when selecting CellRendererSpin

[Hans L]

I ran into some errors while trying out the CellRendererSpin example in the documentation:
http://readthedocs.org/docs/python-gtk-3-tutorial/en/latest/cellrenderers.html#Gtk.CellRendererSpin

I click a few times on a CellRendererSpin area until the spinbuttons show up and the value text is highlighted. Then I click to select a different CellRendererSpin. It doesn't seem 100% consistent every time, but after two or three tries going back and forth, I receive some errors on the console and eventually segfault. Sometimes I get no errors before it segfaults, or only one of the two shown below.

Configuration:
Ubuntu 11.10 64 bit
Python 2.7.2+
python-gobject 3.0.0-0ubuntu4
Gnome 3 Shell
Lenovo Thinkpad W510
VGA compatible controller: nVidia Corporation GT216 [Quadro FX 880M] (rev a2)

Console output:
/usr/lib/python2.7/dist-packages/gi/types.py:43: Warning: g_object_notify: assertion `G_IS_OBJECT (object)' failed
  return info.invoke(*args, **kwargs)
/usr/lib/python2.7/dist-packages/gi/types.py:43: Warning: g_object_notify: object class `GtkStyleContext' has no property named `accessible-value'
  return info.invoke(*args, **kwargs)
Segmentation fault

------------------
(program exited with code: 139)
Press return to continue

[Martin Pitt (pitti)]

Confirming the warning with 3.2.0, the segfault seems fixed now.