This might seem a bit trivial, but easy to fix: At the moment the File Description property of Cubase 10.5 executable is ‘Cubase 10’ which means that if I right-click on a .cpr file I get 2 options saying ‘Open in Cubase 10’ and one ‘Open in Cubase 9’, as I have 9.5, 10.05 and 10.5 installed. I still use the old versions especially 10.05, it’s a bit of a lottery which version gets launched.