Muting input device also mutes output device

[jiaxincao]

Recently, I found that one of my hammerspoon scripts failed to function properly.

   local input_devices = hs.audiodevice.allInputDevices()

   for index, value in ipairs(input_devices) do
      if value ~= nil then
         value:setInputMuted(false)
      end
   end

Previously, the above script only mute the input of my Bose QC35 headphone. However, recently, it also mutes the output of the headphone. I'm super confused of it happens. It happens to my Bose QC35 headphone as well as Sony headphones on two of my laptops. But it works properly for the mac built-in input and output device.

Any help is highly appreciated. Thanks!