It also seems that the Mozilla crowd is yet to figure out how pages can be run in a sand box.
Mozilla will do further work on the browser's sandboxing implementation, incorporating elements from the Chromium project to further restrict its sandbox processes.
All the while more and more legacy plug-ins are getting "tossed under the bus."
Palemoon is starting to look more attractive as a browser with each change the Mozillians make to Firefox. The company seems to want to go the MS route.