I have had 9 outside GE Wink lights connected to Smart Things. I had the following config.
Group – All Outside
Group - Front Lights
Group - Back Lights
SmartApp - Outside Dimmer
SmartApp - Dim to Dim
After a month of everything working perfect 1 of the 9 bulbs stopped working. The bulb still worked but Smarthings would not turn it off. I re-paired the bulb with a different name and it did not work. I had to delete the bulb. Before doing that you have to remove it from every configuration. And that really does not work. You have to keep adding it back and removing it in some of the smart apps until Smarthings lets you delete.
After 30 minutes of playing around I finally was able to remove the bulb and re-pair it to the system. Then I had to go back and add it to all the groups and Smartapps. I hope this does not happen once a month with other bulbs. I wish I could get it working once and never touch it again.