strange behaviour with searchable treeview

Hello,

I upgrade to this new release. I don't know exactly why but now when I 
use a searchable treeview I can only enter 1 character in the gtkentry 
that appear in my Gtktreeview.
I don't know if I use it the right way but when I start to search, the 
search "freeze" after one character and I have to wait the search 
timeout to continue working.

Any help needed,
Thanks in advance.
Benjamin Fourticq.