Forumlar / Cotonti / Support / [solved] Strange urls after update

Hi;

In admin panel, I get strange url like this whenever I click the link:

admin/config#get;n=edit&o=plug&p=html (should be admin/config?n=edit&o=plug&p=html)

Of course urls then don't work. I updated Siena 0.9.9 to Siena 0.9.11. I updated system files, module files and some plugins (urleditor included).

When I see source, the url is correct. what may be the cause?

Added 2 minutes later:

The url redirection is correct when I turn off ajax.