Keyboard shortcut dialog hangs when backspacing

[srihari sriraman]

This bug was reported to Gimp first https://bugzilla.gnome.org/show_bug.cgi?id=704658
But I was asked to report it here because it could be distro specific.

Procedure to reproduce:
----------------------------------------
- Open the keyboard shortcuts dialog
- Type in something > 3 characters long
- backspace all the way

It takes a very long time, close to 30 seconds, to backspace till the last
character and type again.

Some system information:
----------------------------------------
$head -n1 /etc/issue:
 Ubuntu 12.04.2 LTS

$uname -a:
Linux srihari-laptop 3.2.0-51-generic-pae #77-Ubuntu SMP Wed Jul 24 20:40:32
UTC 2013 i686 i686 i386 GNU/Linux

----------------------------------------
Not sure if this is useful, but when the keyboard shortcut dialog hangs, I see
this on my terminal:

(gimp-2.9:25194): Gtk-CRITICAL **: IA__gtk_tree_path_compare: assertion
'b->depth > 0' failed

(gimp-2.9:25194): Gtk-CRITICAL **: IA__gtk_tree_path_compare: assertion
'b->depth > 0' failed

(gimp-2.9:25194): Gtk-CRITICAL **: IA__gtk_tree_path_compare: assertion
'b->depth > 0' failed

(gimp-2.9:25194): Gtk-CRITICAL **: IA__gtk_tree_path_compare: assertion
'b->depth > 0' failed

(gimp-2.9:25194): Gtk-CRITICAL **: IA__gtk_tree_path_compare: assertion
'b->depth > 0' failed

(gimp-2.9:25194): Gtk-CRITICAL **: IA__gtk_tree_path_compare: assertion
'b->depth > 0' failed

[Thomas Hotz (thotz-deactivatedaccount)]

Closing this bug, because the user reported a new bug and a attached a screenshot (see bug #1205769).