This is not a big issue for me but wanted to report it anyway..
In my hall bathroom I have a shower light switch - when I turn the shower light on I want to automatically turn the fan on and then when the shower light turns off 5 minutes later I want the fan off.
I created a Simple Lighting rule that did this. It works when I turn the light on. When I turn it off however the fan immediately goes off. Turning the light on and off from both the dashboard and physically do the same thing.