For the time being I have also disabled e10s because it does not yet, and I suspect never will, support userContent.css and userChrome.css. https://bugzilla.mo

For the time being I have also disabled e10s because it does not yet, and I suspect never will, support userContent.css and userChrome.css. https://bugzilla.mozilla.org/show_bug.cgi?id=1046166 https://bugzilla.mozilla.org/show_bug.cgi?id=1046166 Eventually, I will need to migrate my user styles to a plugin such as Stylish, but I have preferred the minimalism of userContent.css. However, seeing the mention of a multi-process user interface elsewhere in this thread is tempting me to ditch userContent so I can re-enable e10s with the multi-process UI, at least once the kinks are worked out.