I'm seeing this behavior on Android as well, but it can be worked around by deleting/recreating the rules. Sub-optimal, but doable at this point.
Great stuff @bravenel! Now, my only other feature request would be 'timer conditions', so that I could replace some of the Smart Lighting app conditions for 'wait x minutes after motion stops' before firing the lights off rule.
Thanks for doing this app - it get's closer to what I want to do with my system, and seems to be more stable in execution than some of the stock apps right now.