Hi CosmicHippo and -steve-,
thank you so much to -steve- for checking my test file on a version of Windows other than 7 
Yes CosmicHippo, me too I have noticed several other weird things, I hope this problem will be solved soon.
By the way, I’ve been using Cubase for almost 20 years (v3.7 on Atari ST/STE), that old version produced a much more elegant and smooth print than the current one.