iScreensaver version 6.8.5 has a number of bugfixes and improvements, including fixes for several issues that could cause issues when running under macOS Ventura 13 (currently in beta, soon to be released) Authors distributing screensavers for macOS clients should update, re-build, and re-distribute their screensavers. Authors only supporting Windows clients can upgrade at their convenience.
Some metadata not displaying for some images
The metadata and variable list is showing in the project list but is not displayed.
In my attached example anything added to the default is not showing... the reason being that when I selected the image and reselected the Caption tab, the additions are gone, even though still showing in the list. Good ol' Monterey I suspect.
I reset my Caption tab for all images and Preview now shows my sample correctly.
In case it has a bearing... I use "SaveAs" a lot. Once I have a good build and install I SaveAs incrementing filename as well as build/installer name.