Hi Dennis,

Thank you for the provided details.

Indeed, the horizontal scrollbar does not appear again when disabling the word wrap. I can confirm that this needs to be handled on our side. I will approve the Feedback Item and change its status to Unplanned.

As a workaround, you can set the HorizontalScrollBarVisibilityProperty to visible when the IsWordWrapEnabled is set to false:

private void radCheckBox1_CheckedChanged(object sender, EventArgs e)
{
    if (this.radCheckBox1.CheckState == CheckState.Checked)
    {
        this.radSyntaxEditor1.IsWordWrapEnabled = true;
    }
    else
    {
        this.radSyntaxEditor1.IsWordWrapEnabled = false;
        this.radSyntaxEditor1.SyntaxEditorElement.SetValue(RadSyntaxEditorElement.HorizontalScrollBarVisibilityProperty, ScrollBarVisibility.Visible);
    }
}

I have updated your Telerik Points for bringing this to our attention.

Regards,
Dinko | Tech Support Engineer
Progress Telerik