Strange behaviour with ScrollView on Ubuntu

[BDisp]

[tig]

This happens on Windows Terminal and Fluent as well.

This is a Unicode rendering issue. I'm fighting this right now. Do we fix it in the upper layers ( my Charmap Redraw) or lower down in ConsoleDriver...

[tig]

For now, I'm fixing this in the upper layers.

But, given many terminals (Windows Terminal, Fluent, Ubuntu) misbehave when Driver.AddRune sends a non-printable char, I think this should be fixed at the Driver level.

I believe Driver.AddRune and Driver.AddString are not intended to be a way of sending control chars or esc sequences to the terminal. But I may be wrong about this.

[BDisp]

I think it is only through them that this information is passed although each driver has its own way of printing on the screen.

[tig]

This is dupe: #41