Calendar Not Blocking Out Times Resulting In Double Bookings

We are having an issue with the calendar allowing people to book different services even though it is already scheduled with another service, resulting in time slots being double booked.

I've looked through all of our settings and none of them appear to have changed, none are special events, etc.

Do you have "Override booked times from other services" checked for either service?

I am experiencing this same problem. I do not have the "Override booked times from other services" checked.

On the last, 4.5 or current version, 4.6, of Sytist?

Hi Tim, I have just upgraded to 4.6.0 today. I am not sure if this problem is as a result of the upgrade.