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
}
			}
		}
		IResource[] focus = new IResource[resources.size()];
		resources.toArray(focus);
		updateFocusResource(focus);
	}
	/**
	 * 
	 * @param resources
	 */
	protected abstract void updateFilterSelection(IResource[] resources);
	
	void updateFocusResource(IResource[] resources) {
		boolean updateNeeded = updateNeeded(focusResources, resources);
		focusResources = resources;
		updateFilterSelection(resources);
		if (updateNeeded) {
			refresh();
		}
	}
	private boolean updateNeeded(IResource[] oldResources, IResource[] newResources) {
		
		MarkerFilter filter = getFilter();
		if (!filter.isEnabled()) {
			return false;
		}
		
		int onResource = filter.getOnResource();
		if (onResource == MarkerFilter.ON_ANY_RESOURCE || onResource == MarkerFilter.ON_WORKING_SET) {