Received multiple booking for the same slot after multiple “only” dates

So a client of mine used the calendar to create extra slots for a given day. However, he accidentally added multiple “only” opening hours for the same day. After that we were surprised to see that multiple people have booked for the same time.

Now, I understand that this was in essence our fault, just wanted to let you know about this, so maybe you can add some kind of check in the future.

Thanks for the awesome work.