Undesirable ramping in LED intensity
You should either use a driver that has a control pin (the preferred solution) or if you must use a driver that has no control pin you'll have to switch the power to the module. 

The LED wires should not be connected to anything other than the LEDs. You're interfering with the current sensing most likely, and opening up the connection to a current source will (at best) result in triggering protection circuitry designed to prevent overvoltage.