I recently updated to Sierra. Now the Input Sources Menu isn't working. My 2 source are listed (US & Unicode) but selecting them does nothing. The checkmark doesn't move, the menu title doesn't change, and the keyboard function doesn't change.
Additionally, the "Show/Hide input source name", "Show Emoji & symbols", and "Show character viewer" menu options tend to just disappear from the menu and stay gone until reboot.
Any idea what would cause this, and/or how to fix?