Program: 65064
Project: 65064
Buggy source:
/** 
 * draw the cells properties: only one fill is allow, background image goes over background color
 * @param cell
 */
protected void drawCellBox(CellArea cell){
  drawBorders(cell);
  drawCellDiagonal(cell);
  BoxStyle style=cell.getBoxStyle();
  Color backgroundcolor=style.getBackgroundColor();
  BackgroundImageInfo bgimginfo=style.getBackgroundImage();
  if (!rowStyleStack.isEmpty() && (backgroundcolor == null || bgimginfo == null)) {
    BoxStyle rowStyle=rowStyleStack.peek();
    if (rowStyle != null) {
      if (backgroundcolor == null) {
        backgroundcolor=rowStyle.getBackgroundColor();
      }
      if (bgimginfo == null) {
        bgimginfo=rowStyle.getBackgroundImage();
      }
    }
  }
  if (bgimginfo != null) {
    float offsetY=0;
    float offsetX=0;
    int repeatmode=bgimginfo.getRepeatedMode();
    if (repeatmode == BackgroundImageInfo.NO_REPEAT) {
      int imgheight=PPTXUtil.pixelToEmu((int)bgimginfo.getImageInstance().getHeight(),bgimginfo.getImageInstance().getDpiY());
      int imgwidth=PPTXUtil.pixelToEmu((int)bgimginfo.getImageInstance().getWidth(),bgimginfo.getImageInstance().getDpiX());
      int cellheight=PPTXUtil.convertToEnums(getScaledValue(cell.getHeight()));
      int cellwidth=PPTXUtil.convertToEnums(getScaledValue(cell.getWidth()));
      offsetY=PPTXUtil.parsePercentageOffset(cellheight,imgheight);
      offsetX=PPTXUtil.parsePercentageOffset(cellwidth,imgwidth);
    }
    canvas.setBackgroundImg(canvas.getImageRelationship(bgimginfo),(int)offsetX,(int)offsetY,repeatmode);
  }
 else   if (backgroundcolor != null) {
    canvas.setBackgroundColor(backgroundcolor);
  }
}

Fixed version (ground truth):
/** 
 * draw the cells properties: only one fill is allow, background image goes over background color
 * @param cell
 */
protected void drawCellBox(CellArea cell){
  drawBorders(cell);
  drawCellDiagonal(cell);
  BoxStyle style=cell.getBoxStyle();
  Color backgroundcolor=style.getBackgroundColor();
  BackgroundImageInfo bgimginfo=style.getBackgroundImage();
  if (!rowStyleStack.isEmpty() && (backgroundcolor == null || bgimginfo == null)) {
    BoxStyle rowStyle=rowStyleStack.peek();
    if (rowStyle != null) {
      if (backgroundcolor == null) {
        backgroundcolor=rowStyle.getBackgroundColor();
      }
      if (bgimginfo == null) {
        bgimginfo=rowStyle.getBackgroundImage();
      }
    }
  }
  if (bgimginfo != null) {
    float offsetY=0;
    float offsetX=0;
    int repeatmode=bgimginfo.getRepeatedMode();
    if (repeatmode == BackgroundImageInfo.NO_REPEAT) {
      int imgheight=PPTXUtil.pixelToEmu((int)bgimginfo.getImageInstance().getHeight(),bgimginfo.getImageInstance().getDpiY());
      int imgwidth=PPTXUtil.pixelToEmu((int)bgimginfo.getImageInstance().getWidth(),bgimginfo.getImageInstance().getDpiX());
      int cellheight=PPTXUtil.convertToEnums(canvas.getScaledValue(cell.getHeight()));
      int cellwidth=PPTXUtil.convertToEnums(canvas.getScaledValue(cell.getWidth()));
      offsetY=PPTXUtil.parsePercentageOffset(cellheight,imgheight);
      offsetX=PPTXUtil.parsePercentageOffset(cellwidth,imgwidth);
    }
    canvas.setBackgroundImg(canvas.getImageRelationship(bgimginfo),(int)offsetX,(int)offsetY,repeatmode);
  }
 else   if (backgroundcolor != null) {
    canvas.setBackgroundColor(backgroundcolor);
  }
}