Checking availability of repeating bookings via AJAX defective with (at least) Date 2

publicbookings_ajax_post_prepare contains a bug that I am unable to fix ATM.

If a booking is added or edited, that will be repeated (see admin/content/publicbookings/booking/add or admin/content/publicbookings/booking/*/edit) checking conflicts via AJAX ("Check Availability"-Button) will not work: publicbookings_ajax_post_prepare contains a bug. It calls date_repeat_merge with one param ($_POST), but date_repeat_merge expects to get two parameters. Fixing this would need either more familiarity with the Date API then I possess or a rewrite of Publicbookings AJAX features.

Fixing this bug is thus postponed for some time - I'm sorry.