Created attachment 57771 [details] Debug output of adding an attendee Version: unspecified (using Devel) OS: Windows CE 1. Create new Appointment 2. Add an attendee (Either using autocompletion or manually) 3. Try to add a second attendee or change the page in the dialog -> You can not input anything, you can not change the dialog or move the flap. Cursor can still be moved but all inputs are only handled after some seconds. Attached is the debug output from adding "andre-test2.heinecke@demo.kolab.org" using autcompletion from ldap data. Reproducible: Always