Bug 147676 [regression]Visibility set in the first col will affect the second col
Description: Visibility set in the first col will affect the second col Steps to reproduce: 1. Insert a grid(3*3), insert contents to each cell. 2.Set the first col to hide all in visibility and preview Expected result: Only the first col is hidden. Actual result: The second col is hidden, too. If you set the second col in step2, the third col will disappear.
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/layout/pdf/PDFTableLM.java
{
			isFirst = false;
			return;
		}
		ITableBandContent header = (ITableBandContent) tableContent.getHeader( );
		if ( !repeatHeader || header == null )
		{
			return;
		}
		if ( header.getChildren( ).isEmpty( ) )
		{
			return;
		}
		if ( child != null )
		{
			IContent content = child.getContent( );
			if ( content instanceof ITableBandContent )
			{
				if ( ( (ITableBandContent) content ).getBandType( ) == IBandContent.BAND_HEADER )
				{
					return;
				}
			}
		}
		PDFReportLayoutEngine engine = context.getLayoutEngine( );
		PDFLayoutEngineContext con = new PDFLayoutEngineContext( engine );
		con.setFactory( new PDFLayoutManagerFactory( con ) );
		con.setAllowPageBreak( false );
		IReportItemExecutor headerExecutor = new DOMReportItemExecutor( header );
		headerExecutor.execute( );