Bug 204245 Blank column on visibility column in excel[0300]
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/executor/buffermgr/TableContentLayout.java
Cell lastCell = lastCells[cellId];
					if ( lastCell.status == Cell.CELL_SPANED )
					{
						lastCell = lastCell.getCell( );
					}
					if ( lastCell.status == Cell.CELL_USED )
					{
						if ( lastCell.rowSpan < 0
								|| lastCell.rowId + lastCell.rowSpan > rowCount )
						{
							cells[cellId] = Cell.createSpanCell( rowCount,
									cellId, lastCell );
						}
					}
				}
			}
			rowCount++;
			return row;
		}
		isRowHidden = true;
		if ( rowCount > 0 )
		{
			
			Cell[] lastCells = rows[rowCount - 1].cells;;
			for ( int cellId = 0; cellId < realColCount; cellId++ )
			{
				Cell lastCell = lastCells[cellId];
				if ( lastCell.status == Cell.CELL_SPANED )
				{
					lastCell = lastCell.getCell( );