For issue #3538
In SkiaSharp, setting the StrokeWidth to 0 does not guarantee that no border will be drawn. A StrokeWidth of 0 is interpreted as the thinnest line that can be drawn on the device, which is not the same as not drawing a line at all.

So I just wrapped the code to draw the border with a conditional to only paint it if borderwidth is greater than 0. This works fine on the recipe code when setting BorderWidth = 0;

Issue 3538

[ScottPlot.Plot myPlot = new();
if (BorderWidth > 0)
{
    ApplyBorderPaint(paint);
    canvas.DrawRect(backgroundRect.ToSKRect(), paint);
}