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 is works for me.