Reported on the user list:
> I am using the JMapPane to display a WMS(transparent) or WFS layer. Setting
> a background color of the JMapPane, the color is only visible after first
> rendering of the map.
> After panning or zooming, the map is always displayed with white background
> (transparency lost).
> Changing the size of the JMapPane, the background color is visible again.
> So I have changed drawLayers(false) to drawLayers(true) in methods
> onImageMoved() and setDisplayArea() and now background color is always
> But I think this is not the correct way to fix the problem.