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/MarkerView.java
if (onResource == MarkerFilter.ON_ANY
					|| onResource == MarkerFilter.ON_WORKING_SET) {
				continue;
			}
			if (newElements == null || newElements.length < 1) {
				continue;
			}
			if (oldElements == null || oldElements.length < 1) {
				return true;
			}
			if (Arrays.equals(oldElements, newElements)) {
				continue;
			}
			if (onResource == MarkerFilter.ON_ANY_IN_SAME_CONTAINER) {
				Collection oldProjects = MarkerFilter
						.getProjectsAsCollection(oldElements);
				Collection newProjects = MarkerFilter
						.getProjectsAsCollection(newElements);
				if (oldProjects.size() == newProjects.size()) {
					if (newProjects.containsAll(oldProjects)) {
						continue;
					}
				}
				return true;
			}
			updateNeeded = true;
			
		}
		return updateNeeded;
	}