I just purchased the M2P with Smart Controller combo. I charged the controller using the supplied rapid charger and USB-C cable, but the four white LEDs flash rapidly in sequence, then the sequence repeats. The controller did fully charge, but I didn't think this was how the LEDs were supposed to behave. The LEDs also did not shut off, even though it appeared that the charging was completed. Is this normal? I have updated the firmware, turned the controller on and off, and partially discharged the controlled and recharged it.