Switch won't turn off light

After a year of working flawlessly, one of my GE on/off switches will not turn off the lights it is attached to. It’s a single switch and has never had an issue. ST can turn turn the switch on and off (as indicated by the blue light), but the overhead lights refuse to go off. Has anyone had this issue before?

I’ve tried turning it off and back on at the circuit breaker.
I’ve tried restarting SmartThings.
I’ve tried re-seating the connections on the switch itself.

Have you tried pulling the air gap switch?

Called GE and they determined that the switch broke. Still under warranty, so they are replacing. False alarm. :slight_smile: