Backspace behavior is incorrect on Windows in cooked mode

[alexrp]

When switching to virtual terminal mode, it seems that the behaviors of Backspace and Ctrl-Backspace are swapped.

More details in: microsoft/terminal#4949

[xoofx]

Hey,
Just discovered your library and it's greatly designed!

I found one issue probably related to this issue. While trying this program:

Terminal.OutLine("Type some text:");
while (true)
{
    var line = Terminal.ReadLine();
    if (line == null) break;
    Terminal.OutLine(line);
}

In CMD, the input seems to not always work on enter, sometimes it happens straight, sometimes it happens after the first inputted line.

Could be that ENABLE_VIRTUAL_TERMINAL_INPUT is also messing around for that case, I haven't investigated what's exactly received by ReadLine.

[alexrp]

That's most likely unrelated and could be related to the recently-added cancellation support.

Would you mind filing a separate issue with more info? (Library version, Windows version, etc.)