We are working on getting the Lutron Remote integrated with the SmartThings platform. The current issues are related to the group support as the remote sends out messages only to the group. As we progress on supporting the ZigBee groups aspect on SmartThings, we tried using the remote directly with the bulbs. But this causes the remote to ‘steal’ the bulbs if they are connected to the SmartThings platform. To get around this issue, you can pair the remote first to the SmartThings platform and then try connecting the remote to the bulbs.
You can use this alpha device type handler to pair the remote to the hub: