I'm still running macOS 10.14.6 Mojave , after following the many little issues with using Catalina. my major workflow is LR classic and can't afford to have it broken. Especially presets, profiles, importing all my work, building catalogs, etc. I know once I upgrade, I can't go back. so, I"m still concerned, but. really want to upgrade. waiting on PS and LR classic to catch up. Today is 8Feb2020.