TwitchTV Mic Does Not Properly Mute

In the Settings of TwitchTV when I turn off the microphone volume or I use push to on talk, I still hear my sound on twitchTV !

Steps:

– You can turn on or off the push to talk button --> no effect !
– You can turn 0% or 100% the volume --> no effect !

Screenshots verify the mic volume is at 0% and the mic-mute icon is next to the twitch recording icon while outside the menus.

In the new version the same problems too !