We're looking into the issue but we are not sure what is causing it at the moment. So far all reports of this issue have been on versions of MacOS prior to Ventura, and on my own test device, which I currently dual boot between Monterey and Ventura, I only experience the issue on Monterey (the function works as expected on Ventura).
We don't necessarily endorse updating to Ventura, although most of the issues that affected Photo Mechanic have been ironed out with OS updates or the latest build, but if you are able to dual boot it would certainly be interesting to know if your experience is the same as mine.