Bug 188029 Top face is missing in Area chart of 2D+ with negative values
Top face is missing in Area chart of 2D+ with negative values. Please see attached screenshot.
chart/org.eclipse.birt.chart.engine/src/org/eclipse/birt/chart/computation/withaxes/StackedSeriesLookup.java
alSGCopies.add( sg );
							ssl.htSeriesToStackGroup.put( se, sg );
							sg.addSeries( se ); 
						}
					}
				}
			}
			if ( iSharedUnitCount < 1 )
				iSharedUnitCount = 1;
			for ( int j = 0; j < alSGCopies.size( ); j++ )
			{
				sg = (StackGroup) alSGCopies.get( j );
				
				{
					sg.updateCount( iSharedUnitCount );
				}
			}
			ssl.htAxisToStackGroups.put( axaOrthogonal[i], alSGCopies );
		}
		return ssl;
	}
	/**
	 * @return
	 */
	public final int getUnitCount( )
	{
		return iCachedUnitCount;
	}
}