- Settings can only be change in the same session add-on is installed. Cannot change setting once browser restarted. Settings can only be change in the same session add-on is installed. Cannot change setting once browser restarted. Must uninstall, restart FF, install again.

- Enabling auto expand description will make youtube page go crazy.

- Video speed seems to have no effect.

Following only happen in the same session add-on is installed. Even force reload of YT won't fix. Must restart browser:

- Setting video quality seems to work, but YT video setting show no check mark on any resolution.

- Disabling annotation doesn't seems to work?! YT video setting button remain on.