Bug 307747 EPartService doesn't render new parts
1. Have a part in a stack, it is the selected part. 2. Show another part in that stack using PartState.CREATE or PartState.VISIBLE. 3. The part should've been rendered. It is not.
bundles/org.eclipse.e4.ui.workbench/src/org/eclipse/e4/workbench/ui/internal/PartServiceImpl.java
((IPartListener) listener).partDeactivated(part);
		}
	}
	private void firePartHidden(MPart part) {
		for (Object listener : listeners.getListeners()) {
			((IPartListener) listener).partHidden(part);
		}
	}
	private void firePartVisible(MPart part) {
		for (Object listener : listeners.getListeners()) {
			((IPartListener) listener).partVisible(part);
		}
	}
	private void firePartBroughtToTop(MPart part) {
		for (Object listener : listeners.getListeners()) {
			((IPartListener) listener).partBroughtToTop(part);
		}
	}
	public void addPartListener(IPartListener listener) {
		listeners.add(listener);
	}
	public void removePartListener(IPartListener listener) {
		listeners.remove(listener);
	}
	private MContext getParentWithContext(MUIElement part) {
		MElementContainer<MUIElement> parent = part.getParent();
		while (parent != null) {
			if (parent instanceof MContext) {
				if (((MContext) parent).getContext() != null)
					return (MContext) parent;