Program: 78203
Project: 78203
Buggy source:
/** 
 * Groups the svg drawing instructions that represents this primitive events. Each group is assigned an id that identifies the source object of the primitive event
 * @param pre primitive render event
 * @param drawText TODO
 */
protected void groupPrimitive(PrimitiveRenderEvent pre,boolean drawText){
  if (_iun == null) {
    logger.log(ILogger.WARNING,Messages.getString("String_Node_Str",getULocale()));
    return;
  }
  if (pre.getSource() instanceof StructureSource) {
    Series seDT=(Series)getElementFromSource((StructureSource)pre.getSource(),StructureType.SERIES);
    if (seDT != null) {
      String groupIdentifier=null;
      try {
        if (isColoredByCategories() && getElementFromSource((StructureSource)pre.getSource(),StructureType.SERIES_DATA_POINT) != null) {
          seDT=findCategorySeries(seDT);
          groupIdentifier=String.valueOf(seDT.hashCode());
          DataPointHints dph=(DataPointHints)getElementFromSource((StructureSource)pre.getSource(),StructureType.SERIES_DATA_POINT);
          groupIdentifier+="String_Node_Str";
          groupIdentifier+=((DataPointHints)dph).getIndex();
        }
 else {
          seDT=findDesignTimeSeries(seDT);
          groupIdentifier=String.valueOf(seDT.hashCode());
        }
      }
 catch (      ChartException e) {
        logger.log(e);
        return;
      }
      if (drawText) {
        String id=Integer.toString(pre.hashCode());
        List components=(List)labelPrimitives.get(seDT);
        if (components == null) {
          components=new ArrayList();
          labelPrimitives.put(seDT,components);
        }
        components.add(id);
        Element outerGroup=svg_g2d.createElement("String_Node_Str");
        svg_g2d.pushParent(outerGroup);
        Element primGroup=svg_g2d.createElement("String_Node_Str");
        outerGroup.appendChild(primGroup);
        svg_g2d.pushParent(primGroup);
        primGroup.setAttribute("String_Node_Str",groupIdentifier + "String_Node_Str" + id);
        primGroup.setAttribute("String_Node_Str","String_Node_Str");
        outerGroup.setAttribute("String_Node_Str",groupIdentifier + "String_Node_Str" + id+ "String_Node_Str");
        outerGroup.setAttribute("String_Node_Str","String_Node_Str");
      }
 else {
        String id=Integer.toString(pre.hashCode());
        List components=(List)componentPrimitives.get(seDT);
        if (components == null) {
          components=new ArrayList();
          componentPrimitives.put(seDT,components);
        }
        String idTemp=id;
        int counter=1;
        while (components.contains(idTemp)) {
          idTemp=id + "String_Node_Str" + counter;
          counter++;
        }
        components.add(idTemp);
        Element primGroup=svg_g2d.createElement("String_Node_Str");
        svg_g2d.pushParent(primGroup);
        primGroup.setAttribute("String_Node_Str",groupIdentifier + "String_Node_Str" + idTemp);
        primGroup.setAttribute("String_Node_Str","String_Node_Str");
        svg_g2d.setDeferStrokColor(primGroup);
      }
    }
  }
}

Fixed version (ground truth):
/** 
 * Groups the svg drawing instructions that represents this primitive events. Each group is assigned an id that identifies the source object of the primitive event
 * @param pre primitive render event
 * @param drawText TODO
 */
protected void groupPrimitive(PrimitiveRenderEvent pre,boolean drawText){
  if (_iun == null) {
    logger.log(ILogger.WARNING,Messages.getString("String_Node_Str",getULocale()));
    return;
  }
  if (pre.getSource() instanceof StructureSource) {
    StructureSource sourceObject=(StructureSource)pre.getSource();
    Series seDT=(Series)getElementFromSource(sourceObject,StructureType.SERIES);
    if (seDT != null) {
      String groupIdentifier=null;
      try {
        if (isColoredByCategories() && getElementFromSource(sourceObject,StructureType.SERIES_DATA_POINT) != null) {
          seDT=findCategorySeries(seDT);
          groupIdentifier=String.valueOf(seDT.hashCode());
          DataPointHints dph=(DataPointHints)getElementFromSource(sourceObject,StructureType.SERIES_DATA_POINT);
          groupIdentifier+="String_Node_Str";
          groupIdentifier+=((DataPointHints)dph).getIndex();
        }
 else {
          seDT=findDesignTimeSeries(seDT);
          groupIdentifier=String.valueOf(seDT.hashCode());
        }
      }
 catch (      ChartException e) {
        logger.log(e);
        return;
      }
      if (drawText) {
        String id=Integer.toString(pre.hashCode());
        List components=(List)labelPrimitives.get(seDT);
        if (components == null) {
          components=new ArrayList();
          labelPrimitives.put(seDT,components);
        }
        components.add(id);
        Element outerGroup=svg_g2d.createElement("String_Node_Str");
        svg_g2d.pushParent(outerGroup);
        Element primGroup=svg_g2d.createElement("String_Node_Str");
        outerGroup.appendChild(primGroup);
        svg_g2d.pushParent(primGroup);
        primGroup.setAttribute("String_Node_Str",groupIdentifier + "String_Node_Str" + id);
        primGroup.setAttribute("String_Node_Str","String_Node_Str");
        outerGroup.setAttribute("String_Node_Str",groupIdentifier + "String_Node_Str" + id+ "String_Node_Str");
        outerGroup.setAttribute("String_Node_Str","String_Node_Str");
      }
 else {
        String id=Integer.toString(pre.hashCode());
        List components=(List)componentPrimitives.get(seDT);
        if (components == null) {
          components=new ArrayList();
          componentPrimitives.put(seDT,components);
        }
        String idTemp=id;
        int counter=1;
        while (components.contains(idTemp)) {
          idTemp=id + "String_Node_Str" + counter;
          counter++;
        }
        components.add(idTemp);
        Element primGroup=svg_g2d.createElement("String_Node_Str");
        svg_g2d.pushParent(primGroup);
        primGroup.setAttribute("String_Node_Str",groupIdentifier + "String_Node_Str" + idTemp);
        primGroup.setAttribute("String_Node_Str","String_Node_Str");
        svg_g2d.setDeferStrokColor(primGroup);
      }
    }
 else {
      final Chart cmDT=_iun.getDesignTimeModel();
      Object designObject=null;
      if (getElementFromSource(sourceObject,StructureType.TITLE) != null) {
        designObject=cmDT.getTitle();
      }
 else       if (getElementFromSource(sourceObject,StructureType.CHART_BLOCK) != null) {
        designObject=cmDT.getBlock();
      }
      if (designObject != null) {
        String groupIdentifier=String.valueOf(designObject.hashCode());
        String id=Integer.toString(pre.hashCode());
        List components=(List)componentPrimitives.get(designObject);
        if (components == null) {
          components=new ArrayList();
          componentPrimitives.put(designObject,components);
        }
        String idTemp=id;
        int counter=1;
        while (components.contains(idTemp)) {
          idTemp=id + "String_Node_Str" + counter;
          counter++;
        }
        components.add(idTemp);
        Element primGroup=svg_g2d.createElement("String_Node_Str");
        svg_g2d.pushParent(primGroup);
        primGroup.setAttribute("String_Node_Str",groupIdentifier + "String_Node_Str" + idTemp);
        primGroup.setAttribute("String_Node_Str","String_Node_Str");
        svg_g2d.setDeferStrokColor(primGroup);
      }
    }
  }
}