I have a problem with themes using transparency. If areas are drawn with transparency (doesn't matter if using transparency with area or line colors or svg graphics, whith transpareny) I get visible tile borders, which is pretty annoying and ugly to my eyes. Happens with internal theme too (look at forest areas), but mainly with smaller maps. Germany North isn't affected by this, but for instance Brandenburg or other counties. Seems to me like a rendering bug. If I stop using transparency in my theme the tile borders are gone.

