Yeah I’ve had the same problem with mine. Luckily it’s just unplug and plug back in to fix it, but still kinda annoying. Otherwise those are great keyboards (the spacesaver.) These days the prices for real model M’s have gone down a bit it seems like so that might be an option as well.
Maybe like once a month or so… doesn’t seem to be enough to get rid of the keyboard but often enough it’s a bit of an annoyance.