I have two persistent sound input problems. First, voice control often stops responding when I switch apps. This is often solved, but not always, by turning voice control off and then back on in system settings. This is a serious problem.
Secondly, when I go to sound settings check input level I always get blinking gray bars at the same level regardless of the setting on the volume slide control. By itself that is not a problem but I take it as an indication of some problem with core settings that does manifest itself in the failure of voice control to remain responsive to voice input.