Score is unuseable

I’ve used Cubase for 20 years. Why does my score look like this?

I have re-installed; deleted AppData prefs; changed window size; reselected fonts; used score defaults. Nothing helps.

W10 x 64
x64 Cubase Pro
Studio One 3
Halion 6

I have also logged a support request with Yamaha Australia - and this is rare - I’ve been completely ignored. Nothing :-\

Any tips, please respond.

My guess would be you don’t have the correct fonts installed.