Chrome / Safari: "Play in RV disabled" for Cuts but available for Versions?

I get this when I right click on a Cut and hover my mouse over “Play in RV“: RV won’t properly play Cuts if “Flow Production Tracking Review for RV“ is disabled.

My workaround is to somehow conjure the cut tray in RV. But I still wonder why I can’t just click Play in RV?

I’ve enabled everything I know… where is this “Flow Production Tracking Review for RV“?