When I double-click the midi tracks of different instruments on the project window, it shows the notes in key edit, as normal.
Then when I click on one of these notes to audition it, I hear the instrument assigned to that note, as normal.
But when I play my keyboard (mpk mini) I do not hear the instrument that is assigned to that note. Instead I hear the instrument that is selected in the project window. This never happened with my Cubase 3.6.
A long-running problem this.