Updated from 5.0.2302.2202 to 5.1.2303.2308 and now only Endpoint Insights shows up under “Recast Software”, and the only things available under context menus is “Recast Automations”.
I have tried completely removing RCT and reinstalling it without success.
Also, Console reports 5.1.2303.1503
This version appears to have either been pulled or renamed as 5.1.2303.1708 is what is available for download now.