Bug 171533 Pie chart legends are truncated
This only happens with a title for the legend. There is a small bug in the layout algorithm that causes the clipping in such case.
chart/org.eclipse.birt.chart.engine/src/org/eclipse/birt/chart/computation/LegendBuilder.java
dColumnWidth = dMaxW + legendData.dHorizonalReservedSpace;
			if ( dExtraWidth + dColumnWidth > legendData.dAvailableWidth
					+ legendData.dSafeSpacing )
			{
				dMaxW = -legendData.dHorizonalReservedSpace;
			}
			else
			{
				legendData.legendItems.addAll( columnList );
				
				if ( oneVisibleSerie
						&& j < seda.length - 1
						&& ( cm.getLegend( ).getSeparator( ) == null || cm.getLegend( )
								.getSeparator( )
								.isVisible( ) ) )
				{
					dHeight += dSeparatorThickness;
					legendData.legendItems.add( new LegendItemHints( LEGEND_SEPERATOR,
							new Point( dExtraWidth, dHeight
									- dSeparatorThickness
									/ 2 ),
							dMaxW
									+ legendData.insCa.getLeft( )
									+ legendData.insCa.getRight( )
									+ ( 3 * legendData.dItemHeight )
									/ 2,
							0,
							null,
							0,