I just got up and running with 1 Iris contact sensor and 1 GE/Jasco paddle switch.
Create both a RM rule and a Simple Lighting Rule to turn on the light when contact opens, turn off when contact is closed... pretty simple
Results are the same for both rules
Open door, light turns on (perfect) close the door and the light goes out and immediately back on, not so good
I'm using the Generic Z-Wave Switch, hub is v702
What about the events for the iris contact sensor? Does the number of open/close events during a period match the number of light switch on/off events?
I agree with @oldernstone’s suggestion that it may be contact “stutter” as he calls it.
Without millisecond accuracy on the timestamps, it's hard to know, but it seems either the open/closed events are opposite of what they should be, or the last close event is missed in a series of opening and closing the door during one period of time.
EDIT: try turning on logging for the contact sensor and have a look at that too. Also, if you have a laptop or tablet, try opening/closing the sensor while watching the Device Details for the contact, to see if any events are getting missed / doubled.
Did you try clicking "update" in the location setting just to make sure it's locked in? There was an issue with the transition to daylight savings which required this to be done. Other than that, no idea why times would be that far off.
Regarding the bounce, it is in fact registering twice. I was able to see it from inside the closet. When the contact is about an inch away, it triggers, then when the door goes fully closed, the contact triggers again. Whew, glad we got that out of the way. Now, why is this happening.
This contact sensor came from ST, has been in use in the same location doing the same thing for over a year
If you can believe it, the lag that comes from ST cloud-executed code may have been covering up that extra trigger of the contact sensor as the door closes. In any event, re-posititioning one side of the contact may help get rid of that extra trigger.