I had just connected my TwitchTV account and decided to test it. The first thing I did was try to mute the microphone because I don't like my voice on the internet and descovered that the microphone only mutes when the "Push to talk/mute" key (in my case it is bound to y) is being held down. I tried binding it to return and caps lock and the behaviour was the same. The behaviour I expected was "press once to turn on, press again to turn off"

This could be resoved by unplugging an external microphone, but this fix is hard, if not impossible, for those with internal microphones such as those on a laptop or all-in-one PC.

Apologies if this is a duplicate issue of MC-40966 but I deemed it different as this involves the behavior of the toggle key and not the broadcast itself.