That's unbalancing the focus in/out notifications.
Created attachment 388240 [details] Patch
Thanks for the patch. If this patch contains new public API please make sure it follows the guidelines for new WebKit2 GTK+ API. See http://trac.webkit.org/wiki/WebKitGTK/AddingNewWebKit2API
Committed r254826: <https://trac.webkit.org/changeset/254826>