Found 2 issues with Sextante Raster Images on export.
1. When saving the map using File->Save view as Raster using a larger pixel width (3000 for example), the exported file has the Sextante Raster cornered to the top-left part of the map. (first attached image)
2. When saving the map as PDF/SVG/PNG/JPG using the Printer extension or using File->Save view as SVG, the Sextante Raster has the same pixel resolution as its full view display from Open Jump, regardless of the saved scale. (second and third attached images)