In other words, I am NOT interested in using Zoom on both monitors. So
this support page doesn't answer my question at all. Before today, I
could participate in a Zoom session on one monitor while looking at my
PDF notes on the other monitor. Today t...
Thank you IP-Man. I found the problem, thank goodness. For some reason,
I must have unchecked the Displays have separate Spaces checkbox in
Mission Control. All Heck broke lose with Zoom when I did that. All