Sorry, ignore that - I was wrong. What's actually happening is that my input file has multiple bounds elements and the map features are being clipped to the extent of the last bounds element but the map background is the area defined by all of the bounds elements, not just the last one. I have committed a fix so that the background rectangle will match the clipped features. Of course, it still doesn't really handle multiple bounds elements well. After all, throwing away everything outside of the area defined by the last bounds element is unlikely to be what people want. That's why the --ignore-osm-bounds option is there to bodge around the problem. Cheers, Mark