Cubase Pro 11.0.10 - Win 10 20H2 - Event redraw issue?

Redraw issue?
Create empty project
Add a MIDI track > create Event > draw in some notes
Select Track > Inspector > Choose GM Drum Map
Now look and the event display in the track. On my PC it still shows the normal block display. Only once I hoover over the event this changed into the expected diamond style by the Drum editor view.

I can repro this issue as mentioned the display does not update until mouse-over

Thanks for the confirmation, Quick additional question: Win or Mac? Thx

Win 10, Nvidia 1050

Still the same with 11.0.20