With `media.autoplay.enabled.user-gestures-needed` set to false and `media.autoplay.default` set to 1 (block audio), which is the default (and other autoplay-related settings in their defaults as well), a Twitch video can only be either paused or playing muted; unmuting the video pauses it and vice versa.

== Steps to reproduce ==
1. Open about:config
2. Search for autoplay in the settings
3. Set media.autoplay.enabled.user-gestures-needed to false
4. Set media.autoplay.default to 1
5. Open a Twitch VOD, for instance https://www.twitch.tv/videos/280106033
6. Try to unmute the video

== What happens ==
The video is unmuted, but also paused

== What I expect to happen ==
For the video to continue playing, unmuted