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
* 
	 * @return set of versioned feature ids (element type: <code>String</code>)
	 */
	private Set getPreviousFeatures() {
		Assert.isNotNull(previousFeatures);
		return previousFeatures;
	}
	
	/**
	 * Returns the set of versioned feature ids from current session.
	 * 
	 * @return set of versioned feature ids (element type: <code>String</code>)
	 */
	private Set getCurrentFeatures() {
		Assert.isNotNull(currentFeatures);
		return currentFeatures;
	}
	
	/**
	 * Returns the ordered set of versioned feature ids new for this session.
	 * 
	 * @return ordered set of versioned feature ids (element type: <code>String</code>)
	 */
	private Set getNewlyAddedFeatures() {
		Assert.isNotNull(newlyAddedFeatures);
		return newlyAddedFeatures;
	}
	
	/**
	 * Initializes the old, current, and newly added features.