Comment 1 for bug 10197

Yes, the box is the new typeahead feature in gtk+.
BTW No crash here, it closes the text entry on the first click and open
it again if I press "["

Could you provide a backtrace of the crash. YOu can get it in the details
of the bug-buddy window or by doing this in a gnome-terminal:
$ gdb evolution
(gdb) run
... use it and get it crashed
(gdb) bt