Bug 127519 [Markers] Disabling all filters gives empty list
If you disable (uncheck) the 'Default' filter then the result seems to be that -everything- gets filtered. This seems most unintuitive...I'd think that if I don't have any filters enabled then I should see an 'unfiltered' list.
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/views/markers/internal/MarkerAdapter.java
* @see org.eclipse.ui.views.markers.internal.MarkerNode#getConcreteRepresentative()
		 */
		public ConcreteMarker getConcreteRepresentative() {
			return markerAdapter.lastMarkers.getMarker(start);
		}
		/**
		 * Return the name of the receiver.
		 * 
		 * @return String
		 */
		public String getName() {
			return name;
		}
	}
	MarkerView view;
	private MarkerList lastMarkers;
	private MarkerCategory[] categories;
	private boolean building = true;
	
	/**
	 * Create a new instance of the receiver.
	 * 
	 * @param markerView
	 */
	MarkerAdapter(MarkerView markerView) {
		view = markerView;
	}
	/**
	 * Return the category sorter for the receiver. This should only be called
	 * in hierarchal mode or there will be a ClassCastException.