Program: 58418
Project: 58418
Buggy source:
private void renderWindow(GL gl,int numSelectedItems,int lowestItemIndex,float alpha,boolean isPickable){
  if (numSelectedItems <= 0)   return;
  SetBarItem lowestItem=items.get(lowestItemIndex);
  SetBarItem highestItem=items.get(lowestItemIndex + numSelectedItems - 1);
  Vec3f lowestItemPosition=lowestItem.getPosition();
  Vec3f highestItemPosition=highestItem.getPosition();
  float arrowWidth=0.08f * lowestItem.getWidth();
  float rightArrowPositionX=highestItemPosition.x() + highestItem.getWidth() - arrowWidth;
  float width=highestItemPosition.x() + highestItem.getWidth() - lowestItemPosition.x() - 2.0f * arrowWidth;
  if (isPickable) {
    gl.glPushName(pickingManager.getPickingID(viewID,EPickingType.COMPARE_SELECTION_WINDOW_ARROW_LEFT_SELECTION,id));
    renderArrow(gl,lowestItemPosition,arrowWidth,alpha,true);
    gl.glPopName();
    gl.glPushName(pickingManager.getPickingID(viewID,EPickingType.COMPARE_SELECTION_WINDOW_ARROW_RIGHT_SELECTION,id));
    renderArrow(gl,new Vec3f(rightArrowPositionX,lowestItemPosition.y(),lowestItemPosition.z()),arrowWidth,alpha,false);
    gl.glPopName();
    gl.glPushName(pickingManager.getPickingID(viewID,EPickingType.COMPARE_SELECTION_WINDOW_SELECTION,id));
    renderBody(gl,lowestItemPosition,arrowWidth,width,alpha);
    gl.glPopName();
  }
 else {
    renderArrow(gl,lowestItemPosition,arrowWidth,alpha,true);
    renderArrow(gl,new Vec3f(rightArrowPositionX,lowestItemPosition.y(),lowestItemPosition.z()),arrowWidth,alpha,false);
    renderBody(gl,lowestItemPosition,arrowWidth,width,alpha);
  }
}

Fixed version (ground truth):
private void renderWindow(GL gl,int numSelectedItems,int lowestItemIndex,float alpha,boolean isPickable,float zOffset){
  if (numSelectedItems <= 0)   return;
  SetBarItem lowestItem=items.get(lowestItemIndex);
  SetBarItem highestItem=items.get(lowestItemIndex + numSelectedItems - 1);
  Vec3f lowestItemPosition=lowestItem.getPosition();
  Vec3f highestItemPosition=highestItem.getPosition();
  float arrowWidth=0.08f * lowestItem.getWidth();
  float rightArrowPositionX=highestItemPosition.x() + highestItem.getWidth() - arrowWidth;
  float width=highestItemPosition.x() + highestItem.getWidth() - lowestItemPosition.x() - 2.0f * arrowWidth;
  if (isPickable) {
    gl.glPushName(pickingManager.getPickingID(viewID,EPickingType.COMPARE_SELECTION_WINDOW_ARROW_LEFT_SELECTION,id));
    renderArrow(gl,lowestItemPosition,arrowWidth,alpha,true,zOffset);
    gl.glPopName();
    gl.glPushName(pickingManager.getPickingID(viewID,EPickingType.COMPARE_SELECTION_WINDOW_ARROW_RIGHT_SELECTION,id));
    renderArrow(gl,new Vec3f(rightArrowPositionX,lowestItemPosition.y(),lowestItemPosition.z()),arrowWidth,alpha,false,zOffset);
    gl.glPopName();
    gl.glPushName(pickingManager.getPickingID(viewID,EPickingType.COMPARE_SELECTION_WINDOW_SELECTION,id));
    renderBody(gl,lowestItemPosition,arrowWidth,width,alpha,zOffset);
    gl.glPopName();
  }
 else {
    renderArrow(gl,lowestItemPosition,arrowWidth,alpha,true,zOffset);
    renderArrow(gl,new Vec3f(rightArrowPositionX,lowestItemPosition.y(),lowestItemPosition.z()),arrowWidth,alpha,false,zOffset);
    renderBody(gl,lowestItemPosition,arrowWidth,width,alpha,zOffset);
  }
}