I've had some unusual results on my Android phone. I was testing it, and set it to precondition at 7 in the morning. No problem, that worked. Then I set it to precondition once at 5 in the afternoon, quitting time. That worked, but it also still does it at 7 in the morning. So it does it twice a day, every day, and there's no way to see this or change it. It seems like changing it just adds a new event and hides the old one.
I turned it off today, but it seemed to do it anyway this afternoon. It may be that I turned it off for one time, but not the other, so I tried again, and will see if I can stop it. It's so hard to report software bugs for the apps. There was one bug for several versions that's still in the current Android version (open Google Maps from the location page), and I finally get to talk to someone today that seems like she might follow up on it.