Okay, so I installed the beta version per the instructions and still didn’t fix the problem.
To reiterate, the problem was that after uploading the photos and having my thumbnails settings at 220×220 – crop, my 16:9 ratio photos all looked jammed up against the edges of those square thumbs. So, I went into each pic in a gallery and “edit thumbnail” on it.
I could see the editing side of that pop up fine and dragged a marque around a section to make a new thumbnail, “updated” it then saved everything.
That didn’t seem to work. So I made it generate new thumbs also. That didn’t seem to work either. I went through the process of flushing cache in my browser and a host of other things—nothing.
So finally, I removed the code from my gallery page and put in something else and saved it. Then I put my original gallery code back in and saved it and voila—my new edited thumbs appeared. So I went digging and found that W3 Total Cache (A plugin I had been testing) hangs on for dear life even after you deactivate and remove it. You have to go through their special removal procedure here:
https://journalxtra.com/websiteadvice/wordpress/uninstall-w3-total-cache-proper/
Even that didn’t completely fix the problem.
Go to your Gallery settings > Other Options > Miscellaneous and “Clear Image Cache”
That made the new, edited thumbnails show up immediately.
Damn… I spoke too soon. Back to the same behavior in multiple browsers. It’s caching somewhere…
Steve