Bug 145520 Group name will not show up in group list if the group use default name and key expression has no value
Description: Group name will not show up in group list if key expression has no value. Steps to reproduce: 1. Insert a table into report, bind it to a data set 2. Switch to property editor -> groups 3. Click on add button to open new group dialog, then press ok button Expected result: A new group with default name will be added to group list Actual result: A new group is added to group list, but without group name. But when let group tab lost focus and get focus again, you can see the group name.
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/core/Module.java
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	protected void setIntrinsicProperty( String propName, Object value )
	{
		if ( UNITS_PROP.equals( propName ) )
			units = (String) value;
		else if ( THEME_PROP.equals( propName ) )
		{
			updateReference( theme, (ElementRefValue) value,
					getPropertyDefn( THEME_PROP ) );
			theme = (ElementRefValue) value;
		}
		else
			super.setIntrinsicProperty( propName, value );
	}
	/**
	 * Returns the writer for this moudle.
	 * 
	 * @return the writer for this moudle.
	 */
	public abstract ModuleWriter getWriter( );
	/**
	 * Returns the module handle.
	 * 
	 * @return module handle
	 */
	public ModuleHandle getModuleHandle( )
	{
		return (ModuleHandle) getHandle( this );
	}
	/**