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/PDFTableBandLM.java
IElement pContent = content.getParent( );
		if ( pContent instanceof IGroupContent )
		{
			IGroupContent groupContent = (IGroupContent) pContent;
			groupLevel = groupContent.getGroupLevel( );
			repeatHeader = groupContent.isHeaderRepeat( );
			type = ( (IBandContent) content ).getBandType( );
			if ( type == IBandContent.BAND_GROUP_HEADER
					&& !( executor instanceof DOMReportItemExecutor )
					&& repeatHeader )
			{
				execute( executor, content );
				executor.close( );
				groupContent.getChildren( ).add( content );
				this.executor = new DOMReportItemExecutor( content );
				this.executor.execute( );
			}
		}
		else if ( pContent instanceof ITableContent )
		{
			ITableContent tableContent = (ITableContent) pContent;
			repeatHeader = tableContent.isHeaderRepeat( );
			type = ( (IBandContent) content ).getBandType( );
			if ( type == IBandContent.BAND_HEADER
					&& !( executor instanceof DOMReportItemExecutor )
					&& repeatHeader )
			{
				execute( executor, content );
				executor.close( );
				tableContent.getChildren( ).add( content );