Bug 58542 Dangerous change to setSystem in MarkersViews
In MarkerView.refresh() there is the line uiJob.setSystem(true); Which may happen after the uiJob has run. As a result it is possible that it is not being used to decrement the count of jobs and the progress monitor can run forever.
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/views/markers/internal/MarkerView.java
}
	protected abstract String[] getRootTypes();
	/**
	 * @param part
	 * @param selection
	 */
	protected void focusSelectionChanged(IWorkbenchPart part, ISelection selection) {
		List resources = new ArrayList();
		if (part instanceof IEditorPart) {
			IEditorInput input = ((IEditorPart) part).getEditorInput();
			if (input instanceof FileEditorInput) {
				resources.add(((FileEditorInput) input).getFile());
			}
		} else {
			if (selection instanceof IStructuredSelection) {
				for (Iterator iterator = ((IStructuredSelection) selection).iterator(); iterator.hasNext();) {
					Object object = iterator.next();
					if (object instanceof IAdaptable) {
						ITaskListResourceAdapter taskListResourceAdapter;
						Object adapter = ((IAdaptable) object).getAdapter(ITaskListResourceAdapter.class);
						if (adapter != null && adapter instanceof ITaskListResourceAdapter) {
							taskListResourceAdapter = (ITaskListResourceAdapter) adapter;
						} else {
							taskListResourceAdapter = DefaultMarkerResourceAdapter.getDefault();
						}
						IResource resource = taskListResourceAdapter.getAffectedResource((IAdaptable) object);
						if (resource != null) {
							resources.add(resource);
						}
					}