Dan, thank you. I just followed your instructions on our development site, and that fix appears to work: https://anl108.communitydev.uaf.edu/flashcards/
The site did hang for several minutes after I clicked the “activate” button, so I got worried, since that was the behavior it had been exhibiting earlier. But I closed that window and loaded the site in a separate one, and a few other browsers, and it showed up just fine. Thanks, and keep up the excellent work.