Firefox no longer provides the APIs that powered the disable functionality so all of those features had to be removed. I have asked for those APIs to be restored, but until that happens there is nothing that I can do.

Localizations also work completely differently in the new Firefox so they need to be completely rewritten, but that is something that I hope to restore in a future release with the support of the translators.

The new Firefox no longer allows extensions to create toolbars and has limited options for context menu support so again there is nothing that I can do on my end to work around these new limitations.