I have had that same problem in that past. It has been especially problematic with services that are larger than the "Block time" set at Easy Appointment > Settings > Date & Time. For what I do, not all of my services are the same amount of time and I don't want to block my most commonly performed services. I REALLY WISH THAT WE COULD SET BLOCK TIMES FOR EACH SERVICE!!! Anyway, having had to stay late over my lunch hour (with a resultant, much quicker lunch hour) and having to stay after hours, later than I usually close I had to find a solution. It is awfully strange that the software cannot figure that out, right? So, I have resulted in blocking "Out" from 12:00-12:10 PM and at the end of each day so that this cannot happen. This is the only solution that currently seems to work. At least it works for me and would probably work for you too.