> Though I very much loathe that the plugins do not work on “special pages” which have to be navigated in an inconvenient manner.

This is one of the worst things about the Quantum addon changes in Firefox too. Can't use my Vimium shortcuts or Gesturefy gestures on a new tab page, nor on an error page (404 etc.), not even on a plaintext web page (i.e if the mimetype is text). It's so annoying and interruptive.