Yes it’s happened to me. If you start a reservation and don’t finish it, you have to cancel “properly” and I don’t know what that means
I logged out, cleared cache and cookies, shut down the computer and my router and my modem, waited 30 min
I don’t know what I did wrong (if anything) to cause the problem. And I don’t know what part of what I did to fix it, worked. But it did work and the reservation I wanted was still available. So I’ll be at The Canterbury in San Francisco for Thanksgiving