Donald, Turns out this was exactly my problem. I had my caseDisplayRepresentations computed dynamically. When I searched through the build logs, I found the exact same error. Once I fixed that I was able to get the Action Button to work using Xcode 14.2. Thank you for your help!

I submitted this as FB11989757 saying that this error should have been reported as an error in Xcode under the Issues in the sidebar.

Thank you so much!! This saved me SOOOOOOO much time.