Bug 183217 suppress duplicates leaving whitespace
I am not certain this is a bug, but if I set suppress duplicates on all the columns, I still get whitespace for suppressed rows. 2.1.2 did not do this. This issue happens in the M6 build.
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/layout/pdf/cache/TableAreaLayout.java
HashSet cells = new HashSet();
		int result = 0;
		for(int i=0; i<columnNumber; i++)
		{
			CellArea cell = row.getCell( start + i );
			if(cell!=null)
			{
				if(cell instanceof DummyCell)
				{
					CellArea ref = ((DummyCell)cell).getCell( );
					if(!cells.contains( ref ))
					{
						int width = resolveBottomBorder( ref, row.finished );
						if ( width > result )
							result = width;
						cells.add( ref );
					}
				}
				else
				{
					if(!cells.contains( cell ))
					{
						int width = resolveBottomBorder( cell, row.finished );
						if ( width > result )
							result = width;
						
						cells.add( cell );
					}
				}
			}