Bug 127289 [Markers] SystemFilter and group selection state not preserved
We are not preserving the selection state of the system filters or which group is selected.
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/views/markers/internal/ProblemView.java
IField groupingField;
		ProblemView problemView;
		/**
		 * Create a new instance of the receiver.
		 * 
		 * @param label
		 * @param field
		 * @param view
		 */
		public GroupingAction(String label, IField field, ProblemView view) {
			super(label, IAction.AS_RADIO_BUTTON);
			groupingField = field;
			problemView = view;
			IField categoryField = view.getMarkerAdapter().getCategorySorter()
					.getCategoryField();
			if (categoryField == null) {
				setChecked(groupingField == null);
			} else {