The piano roll has an awesome feature of snapping played or inserted notes to selected key & scale, so that people who don't know music theory and / or cannot play well won't record wrong pitches.
However, when the track is following Chord Track, that feature gets completely disabled whereas it should still be on and - ideally - should follow the Chord Track as well.
As an encouragement, I'll say that Cubase introduced that in v11 last year :)