Bug 50438 [RCP] Progress view icon "area" shows even if setShowStatusLine(false) is called
Build: M6 If I call IWorkbenchWindowConfigurer.setShowStatusLine(false) in my WorkbenchAdvisor's preWindowOpen(IWorkbenchConfigurer) method the status line is hidden. BUT, the action with a tooltip of "Double click to open Progress View" which appears in the bottom left of the window still shows. The action is missing/can't find its icon so it just shows as empty screen space, but it shows over views that I put on the left side of the window.
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/ide/IDEWorkbenchAdvisor.java
*/
	private void initializeFeatureSets() {
		Assert.isTrue(currentFeatures == null);
		
			
		IDialogSettings settings = IDEWorkbenchPlugin.getDefault().getDialogSettings();
		String[] previousFeaturesArray = settings.getArray(INSTALLED_FEATURES);
		previousFeatures = null;
		if (previousFeaturesArray != null) {
			previousFeatures = new HashSet(Arrays.asList(previousFeaturesArray));
		} else {
			previousFeatures = new HashSet(0);
		}
		
		currentFeatures = computeFeatureSet();
		String[] currentFeaturesArray = new String[currentFeatures.size()];
		currentFeatures.toArray(currentFeaturesArray);
		settings.put(INSTALLED_FEATURES, currentFeaturesArray);
		
		
		newlyAddedFeatures = new TreeSet(currentFeatures);
		newlyAddedFeatures.removeAll(previousFeatures);
		
	}
	/*
	 * Open a welcome editor for the given input
	 */
	private void openWelcomeEditor(IWorkbenchWindow window, WelcomeEditorInput input, String perspectiveId) {
		if (configurer.getWorkbench().getWorkbenchWindowCount() == 0) {