Bug 199009 [Automation][Regression] 2D percent stacked area chart did not render properly
steps to reproduce: - use the attached report design - preview in html expected behavior: - chart was renderred properly actual behavior: - it simply did not do so please refer to the attached screen captures
chart/org.eclipse.birt.chart.ui.extension/src/org/eclipse/birt/chart/ui/swt/composites/PaletteEditorComposite.java
if ( i == iSelectedIndex )
			{
				
				if ( !coEditor.isVisible( ) )
				{
					coEditor.setVisible( true );
				}
				coEditor.setLocation( 3, iY + 3 );
				( (FillChooserComposite) coEditor ).setFill( fi );
			}
			iY += iItemHeight;
		}
		
		if ( iSelectedIndex < iStartIndex
				|| iSelectedIndex >= iStartIndex + iAvailableItems )
		{
			if ( coEditor.isVisible( ) )
			{
				coEditor.setVisible( false );
			}
		}
		gcComposite.drawImage( imgBuffer, rCA.x, rCA.y );
	}
	/**
	 * The scrollbar's thumb is updated based on the palette entry count and the
	 * current selection
	 */
	private final void updateScrollBar( )
	{
		sb.setPageIncrement( iViewHeight );