Thanks again BetterRed, Kovid, & theducks for your help. Each one of you kept me interested and re-examining the screen until I found the fix.
BetterRed's image helped me to visualize that I was missing something on the Editor.
I wonder if sometime last year when I was practicing how to use Calibre if I could have erased the 'add-on' link's in Preferences for Edit book to create the 2 menu bars I see on your Editor?
I was using whatever version was new the last week of December 2020, for a year.
Updated to 5.35.0 Friday Jan 28. So maybe the update left whatever I missed up as it was.
But, whatever, I'm running at full steam again.