Bug 296695 [Markers] Problems view does not update on selection change
I20091201-1600 Problems view does not update any more on selection change. I have a 'Warnings on Selection' filter, but I always see the same warnings, even after I opened an editor or selected something in the Package Explorer.
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/views/markers/MarkerContentGenerator.java
*         settings or selection. false if content has not change or an
	 *         update has cleared the changes.
	 */
	boolean contentChanged() {
		if (enabledFilters == null || enabledFilters == FILTERS_CHANGED) {
			/*
			 * TODO:Find a more narrowing way to check if active filters have
			 * actually changed.Right now the update filter method set the
			 * enabled filters to null. TODO: We should use a preference
			 * listener for this We can 'optimally' use it for filter change
			 * only on fixing the above.
			 */
			return true;
		}
		Collection current = MarkerResourceUtil.computeResources(
				getSelectedResources(), getEnabledFilters(), andFilters());
		Collection activeResources = currentResources;
		if (current.size() != activeResources.size()) {
			
			return true;
		}
		Iterator iterator = activeResources.iterator();
		boolean needsUpdate = false;
		while (!needsUpdate && iterator.hasNext()) {
			Object object = iterator.next();
			if (!current.contains(object)) {
				needsUpdate = true;
			}
		}
		return needsUpdate;