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
dFHeight,
						la.getCaption( ).getValue( ),
						dsiBase.size( ) ) );
			}
		}
		
		dColumnWidth = dWidth + legendData.dHorizonalReservedSpace;
		if ( dExtraWidth + dColumnWidth > legendData.dAvailableWidth
				+ legendData.dSafeSpacing )
		{
			dWidth = -legendData.dHorizonalReservedSpace;
		}
		else
		{
			legendData.legendItems.addAll( columnList );
		}
		columnList.clear( );
		dWidth += legendData.dHorizonalReservedSpace + dExtraWidth;
		dHeight = Math.max( dRealHeight, dHeight );
		return new double[]{
				dWidth, dHeight
		};
	}
	private double[] computeVerticalByTopBottomValue( IDisplayServer xs,
			Chart cm, SeriesDefinition[] seda, RunTimeContext rtc,
			ITextMetrics itm, Label la, LegendData legendData )
			throws ChartException
	{
		double dWidth = 0, dHeight = 0;
		double dW, dMaxW = 0, dColumnWidth;