Bug 157744 [Regression]GUI has memory leak
Causes by 153732, designer has a regression to hold the report design handle in a hashmap. That causes the report design can not be released.
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/internal/ui/editors/schematic/editparts/TableEditPart.java
for ( int i = 0; i < size; i++ )
		{
			if ( selections.get( i ) != cellPart )
			{
				list.add( selections.get( i ) );
			}
		}
		int rowSpan = maxRow.getRowNumber( )
				- minRow.getRowNumber( )
				+ maxRow.getRowSpan( );
		int colSpan = maxColumn.getColumnNumber( )
				- maxRow.getColumnNumber( )
				+ maxColumn.getColSpan( );
		getTableAdapter( ).transStar( MERGE_TRANS_LABEL );
		try
		{
			MergeContent( cellPart, list );
		}
		catch ( ContentException e )
		{
			ExceptionHandler.handle( e );
		}
		cellPart.setRowSpan( rowSpan );
		cellPart.setColumnSpan( colSpan );
		removeMergeList( list );
		getTableAdapter( ).reload( );
		getTableAdapter( ).transEnd( );
		getViewer( ).setSelection( new StructuredSelection( cellPart ) );	
	}