Traffic Lights Beltline @ Dividend

Is it just me, or have you been getting stopped by the traffic light at Dividend and Beltline, just north of LBJ? These lights, installed over a year ago, seem to periodically detect a phantom vehicle atop their sensors as they then signal a red light for those traveling north and south, while the unseen "phantom" gets a green as it faces eastward. You'd think in today's era of amazing computer controls and technology such stops would be unnecessary, but experience says otherwise.