Someone books a free seat (it is only a booking request). Then i check the booking request for entry requirements. Because of the entry requirements the person is allowed to take place only if there are some free seats after the booking period. So I put the person to the waitinglist.
The Placeholders i used (see above) still shows 5 free seats on the waitinglist, but only 9 free seats. in my case it should show 4 free seats on the waitinglist, and 10 free seats.