Can’t see the lines, the width is too small.
Regards 
Windows 10 AppS 9.2.2.1
Good one - seems to be platform dependant. We’ll look into it.
@artur, what are your settings in Preferences… Code?
It seems to be OK the with default settings.
On Windows, the font is usually Consolas.
Just uploaded 9.3.1 - see if that fixes it for you.
