Program: 58536
Project: 58536
Buggy source:
/** 
 * Renders the heading for the category and the items.
 * @param gl
 */
void render(GL gl){
  float yOrigin=dimensions.getYOrigin();
  dimensions.setHeight(0);
  dimensions.increaseHeight(BookmarkRenderStyle.CONTAINER_HEADING_SIZE);
  yOrigin-=BookmarkRenderStyle.CONTAINER_HEADING_SIZE;
  RenderingHelpers.renderText(gl,textRenderer,categoryName,dimensions.getXOrigin() + BookmarkRenderStyle.SIDE_SPACING,yOrigin,GeneralRenderStyle.SMALL_FONT_SCALING_FACTOR);
  for (  ABookmark item : bookmarkItems) {
    item.getDimensions().setOrigins(BookmarkRenderStyle.SIDE_SPACING,yOrigin);
    item.getDimensions().setWidth(dimensions.getWidth() - 2 * BookmarkRenderStyle.SIDE_SPACING);
    yOrigin-=item.getDimensions().getHeight();
    float[] highlightColor=null;
    if (selectionManager.checkStatus(ESelectionType.MOUSE_OVER,item.getID())) {
      highlightColor=GeneralRenderStyle.MOUSE_OVER_COLOR;
    }
 else     if (selectionManager.checkStatus(ESelectionType.SELECTION,item.getID())) {
      highlightColor=GeneralRenderStyle.SELECTED_COLOR;
    }
    int pickingID=pickingIDManager.getPickingID(this,item.getID());
    gl.glPushName(pickingID);
    item.render(gl);
    if (highlightColor != null) {
      float xOrigin=item.getDimensions().getXOrigin();
      float width=item.getDimensions().getWidth();
      float height=item.getDimensions().getHeight() - BookmarkRenderStyle.FRAME_SPACING;
      gl.glColor3fv(highlightColor,0);
      gl.glBegin(GL.GL_LINE_LOOP);
      gl.glVertex3f(xOrigin,yOrigin,0);
      gl.glVertex3f(xOrigin + width,yOrigin,0);
      gl.glVertex3f(xOrigin + width,yOrigin + height,0);
      gl.glVertex3f(xOrigin,yOrigin + height,0);
      gl.glEnd();
    }
    gl.glPopName();
    dimensions.increaseHeight(item.getDimensions().getHeight());
  }
}

Fixed version (ground truth):
/** 
 * Renders the heading for the category and the items.
 * @param gl
 */
void render(GL gl){
  float yOrigin=dimensions.getYOrigin();
  dimensions.setHeight(0);
  dimensions.increaseHeight(BookmarkRenderStyle.CONTAINER_HEADING_SIZE);
  yOrigin-=BookmarkRenderStyle.CONTAINER_HEADING_SIZE;
  RenderingHelpers.renderText(gl,textRenderer,categoryName,dimensions.getXOrigin() + BookmarkRenderStyle.SIDE_SPACING,yOrigin,GeneralRenderStyle.SMALL_FONT_SCALING_FACTOR);
  for (  ABookmark item : bookmarkItems) {
    item.getDimensions().setOrigins(BookmarkRenderStyle.SIDE_SPACING,yOrigin);
    item.getDimensions().setWidth(dimensions.getWidth() - 2 * BookmarkRenderStyle.SIDE_SPACING);
    yOrigin-=item.getDimensions().getHeight();
    float[] highlightColor=null;
    if (selectionManager.checkStatus(ESelectionType.MOUSE_OVER,item.getID())) {
      highlightColor=GeneralRenderStyle.MOUSE_OVER_COLOR;
    }
 else     if (selectionManager.checkStatus(ESelectionType.SELECTION,item.getID())) {
      highlightColor=GeneralRenderStyle.SELECTED_COLOR;
    }
    int pickingID=pickingIDManager.getPickingID(this,item.getID());
    gl.glPushName(pickingID);
    item.render(gl);
    if (highlightColor != null) {
      float xOrigin=item.getDimensions().getXOrigin();
      float width=item.getDimensions().getWidth();
      float height=item.getDimensions().getHeight() - BookmarkRenderStyle.FRAME_SPACING;
      gl.glColor3fv(highlightColor,0);
      gl.glBegin(GL.GL_LINE_LOOP);
      gl.glVertex3f(xOrigin,yOrigin,0);
      gl.glVertex3f(xOrigin + width,yOrigin,0);
      gl.glVertex3f(xOrigin + width,yOrigin + height,0);
      gl.glVertex3f(xOrigin,yOrigin + height,0);
      gl.glEnd();
    }
    gl.glPopName();
    dimensions.increaseHeight(item.getDimensions().getHeight());
  }
  GLHelperFunctions.drawPointAt(gl,0,dimensions.getHeight(),0);
}