Coincidentally, the feature rich editor returned almost immediately after I posted my earlier message, but I have no idea how I brought it about.
To answer your question, when I click on the link in question (even now), I still don't see any of the miscellaneous options. If it helps with troubleshooting, when the editor returned (again, I'm not sure what I did to get it back), I also saw this really annoying red prompt at the bottom of pages telling me to turn off ad block plus...something I had never seen before (I have an ad free subscription so I didn't know that it was enabled). I did turn it off and now that red prompt is gone.