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
setChecked(categoryField.equals(groupingField));
			}
		}
		/*
		 * (non-Javadoc)
		 * 
		 * @see org.eclipse.jface.action.Action#run()
		 */
		public void run() {
			String description = Util.EMPTY_STRING;
			if (groupingField != null) {
				description = groupingField.getDescription();
			}
			IDEWorkbenchPlugin.getDefault().getPluginPreferences().setValue(
					IDEInternalPreferences.PROBLEMS_GROUPING, description);
			problemView.getMarkerAdapter().getCurrentMarkers().clearGroups();
			problemView.getMarkerAdapter().getCategorySorter()
					.setCategoryField(groupingField);
			problemView.refreshViewer();
			getMarkerAdapter().getCategorySorter().saveState(
					getDialogSettings());
		}
	}
	/**
	 * Return a new instance of the receiver.
	 */
	public ProblemView() {
		super();
		creationTime.setShowing(false);
	}