The extension works well...most of the time. Occasionally and at random, while active, the volume just boosts to what feels like a million percent, causes audio to be distorted and extremely and uncomfortably loud. After a few seconds it returns to normal. I lived up with it for a bit, I can't use it anymore.
This shouldn't be an issue with the plugin. Not sure why you're having that issue, do you have anything else interacting with audio / firefox? For convenience upon clicking, the slider is in focus, perhaps you have a device where the direction is locking to the right? Like in windows if you have an xbox controller plugged in with joystick drift.
