Traceback (most recent call last):
  File "/usr/share/software-center/softwarecenter/ui/gtk3/app.py", line 967, in on_menu_edit_activate
    bounds = self.active_pane.searchentry.get_selection_bounds()
  File "/usr/lib/python2.7/dist-packages/gi/overrides/__init__.py", line 99, in wrapped
    ret = method(*args, **kwargs)
TypeError: unbound method get_selection_bounds() must be called with TextBuffer instance as first argument (got SearchEntry instance instead)