Hate to shit on your doorstep but this update sucks, you literally removed everything and forced me on the new layout, Don't add a half finished alpha and not let us go back to the old version, you've neutered this whole addon and left us with some scraps of its former self, I loved it but now I can't even uninstall it because it completely breaks YouTube.

EDIT: A swift reply from the developer has completely resolved all the issues stated before, I wasn't aware you could downgrade, You can do so at https://addons.mozilla.org/firefox/addon/particle-iridium/versions/ I hope that with time the addon can return to its former glory but as of now I'll be using the older version. Best of luck to the developer, hopefully the addon can become even better!