Another ‘refresh issue’ perhaps.?
Reads like they’re not going to be adding any sort of ‘refresh button’ or whatever any time soon Phil… see your other post for a direct response from SB dev…
Sync between midi/score editor when splitting, and staleness - Cubase - Steinberg Forums
So for now, as @steve mentions above, the solution is you’ll need to refresh the display by some (any) other means…