The buttons in the headers of my View as List forms no longer work. They work in regular forms.
I can’t imagine why the macOS version would affect this, but I have been able to duplicate this problem.
I was right, the macOS version doesn’t affect this. The problem is with the experimental new version of Panorama. When using this experimental new version, the problem appears on any version of macOS. I think this is actually good news, it should make it easier to track down and fix. However, I have not tracked down the source of the problem yet.