Since the Tuesday Windows update, the capitalization of some keys aren't working intermittently. The "C" and "M" seem to feel it most.

I've made sure the keyboard is fully charged.

turned Bluetooth off then on again.

Restarted computer.

Unpaired, reset (Fn+Left Shift+Back), re-paired.

Still, some of those characters stop working after a while.

Anyone else having this problem? Any ideas of other things to try?