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
if (desc != null) {
					page.setPerspective(desc);
				}
			}
			
			windowConfigurer.getWindow().setActivePage(page);
			page.openEditor(new WelcomeEditorInput((AboutInfo) welcomePerspectiveInfos.get(index)), WELCOME_EDITOR_ID, true);
		}
	}
	/* (non-Javadoc)
	 * @see org.eclipse.ui.application.WorkbenchAdvisor#postWindowClose
	 */
	public void postWindowClose(IWorkbenchWindowConfigurer windowConfigurer) {
		WorkbenchActionBuilder a = (WorkbenchActionBuilder) windowConfigurer.getData(ACTION_BUILDER);
		if (a != null) {
			windowConfigurer.setData(ACTION_BUILDER, null);
			a.dispose();
		}
	}
	/**
	 * Returns the resource change listener for noticing new errors.
	 * Processes the delta and shows the Tasks view if new errors 
	 * have appeared.  See PR 2066.
	 */ 
	private IResourceChangeListener getShowTasksChangeListener() {
		return new IResourceChangeListener() {
			public void resourceChanged(final IResourceChangeEvent event) {	
				IPreferenceStore store = IDEWorkbenchPlugin.getDefault().getPreferenceStore();
				if (store.getBoolean(IDEInternalPreferences.SHOW_TASKS_ON_BUILD)) {
					IMarker error = findProblemToShow(event);