I've just replaced the Cyo Senso Plus light on my Brompton with an IQ-X. It's a brilliant light, literally - lights up the road way ahead. However, the on/off switch is behaving quite oddly. I know about the "Senso" mode.
Seemingly though, the switch only works to turn the light on if the wheel is turning. That's not very convenient on a Brompton, as I basically have to remove the front bag, lift up the wheel and spin it, turn the light on, and then put it all back.
Has anyone had a similar experience?