Bug 320813 Minimized stacks are missing on restart
Run a fresh inner (no deltas) Detach the Outline view by dragging it right maximize the editor area close restart There are no minimized stacks visible If yoiu put a breakpoint in the WBWRenderer's processContents where it's restoring the trimBars before the restart you can see that there is only the one 'top' trim bar in the model, not sure where they went...I'll attach my deltas file, to my untrained eye the minimized stacks seem to be there (i.e. if you do a find on 'left(' there is a ToolControl defined).
bundles/org.eclipse.e4.ui.workbench/src/org/eclipse/e4/ui/internal/workbench/XMLModelReconciler.java
entryElement.setAttribute(ENTRY_ATTVALUE_VALUE, (String) entry.getValue());
					referenceAttributeElement.appendChild(entryElement);
				}
			} else {
				referenceAttributeElement.setAttribute(featureName,
						String.valueOf(object.eGet(feature)));
			}
		} else {
			referenceAttributeElement.setAttribute(UNSET_ATTNAME, UNSET_ATTVALUE_TRUE);
		}
		return referenceAttributeElement;
	}
	private static boolean isStringToStringMap(String featureName) {
		return featureName.equals(CONTRIBUTION_PERSISTEDSTATE_ATTNAME)
				|| featureName.equals(CONTEXT_PROPERTIES_ATTNAME);
	}
	/**
	 * Determines whether this feature is a direct reference to a particular object. That is, the
	 * reference is a 1-1 relationship and the referenced object is not referred by other objects
	 * and is a hard containment feature.
	 * <p>
	 * An example of a direct reference would be a window's main menu. The menu is "owned" by the
	 * window and cannot be one of the menus in a part.
	 * </p>
	 * 
	 * @param featureName
	 *            the name of the interested feature
	 * @return <code>true</code> if this particular feature directly references and "owns" the
	 *         target object, <code>false</code> otherwise
	 * @see #isIndirectReference(String)