I had amazon flex muted (top and button lights red) then red light up-top started to pulsate blue. I unmuted the flex by pressing the mute button to see if I h

I had amazon flex muted (top and button lights red) then red light up-top started to pulsate blue. I unmuted the flex by pressing the mute button to see if I had notifications. Flex did not respond but mute button become red again in a few seconds. TLDR, it appears that mute function can turn itself on by itself.