I didn’t realize that there WAS a setting for the Web Player in Publisher. Now that I realize that, I’ve changed it, and things are working better. There should be a clear indicator in Web Player’s back panel that Web Player 5 must be activated in Publisher in order to work properly.
That’s not what happens. I did some more testing and discovered that the only time that a change to a template gets saved is when the Save button in the top-right gets clicked. Saving at the bottom doesn’t help at all. The only time the Save button at the bottom seems to work is when you’re adding a new template to the page.
Another issue: each time I turn off Web Player then turn it back on again, any changes I made to the configuration get returned to defaults supplied at installation.