Continuing the discussion from Anyone's Experience ATT Uverse WiFi with Rachio:
Finally tracked this issue down. For flex daily schedules we send a backup schedule to the controller in case it is offline for a certain period of time. When you disable a flex daily schedule (you have two disabled flex daily schedules, one enabled flex daily schedule) we should be removing those backup schedules which we are not.
A fix for this will be applied over the next few days. In the meantime, if you want the blinking to stop, delete the disabled flex daily schedules the problem should go away. You might also have to power cycle the controller after deleting the schedules.