If any other Wrangler owners are having problems here the state number is 253-548-2420 to report the signal. other vehicles dont seem to be affected I don't imagine motorcycles set the sensor off if a Wrangler cant.
I don't know why that would be (is your Jeep lifted - thinking it might be too far for the sensor to pick up?), I've not experienced that at any intersection in the area. We pass through this one a couple of times a week.
When I rode a cycle I always had to drop the kickstand down on the sensor to activate the light but never in a vehicle.