Bug 319961 Reset perspective fails with parts moved into the editor area
1. Start a fresh e4 workbench 2. Move the Javadoc view into the editor area 3. Reset the perspective 4. Open the Javadoc view Result: The Javadoc view is opened in the editor area. In the bottom stack there still is a tab for the Javadoc view; this tab can be clicked, but it will activate the view in the editor area. The toolbar, however, is shown in the bottom stack.
bundles/org.eclipse.e4.ui.workbench/src/org/eclipse/e4/ui/internal/workbench/PartServiceImpl.java
} else {
				stack.getChildren().add(part);
			}
		} else {
			((List) lastContainer.getChildren()).add(part);
		}
		if (category != null) {
			lastContainer.getTags().add(category);
		}
	}
	private MElementContainer<?> getLastContainer() {
		MElementContainer<MUIElement> searchRoot = rootContainer;
		List<MUIElement> children = searchRoot.getChildren();
		if (children.size() == 0) {
			MPartStack stack = BasicFactoryImpl.eINSTANCE.createPartStack();
			searchRoot.getChildren().add(stack);
			return stack;
		}
		MElementContainer<?> lastContainer = getLastContainer(searchRoot, children);
		if (lastContainer == null) {
			MPartStack stack = BasicFactoryImpl.eINSTANCE.createPartStack();
			searchRoot.getChildren().add(stack);
			return stack;
		}
		return lastContainer;
	}
	private MElementContainer<?> getLastContainer(MElementContainer<?> container, List<?> children) {
		if (children.isEmpty()) {
			return null;
		}