Bug 26221 [Perspectives] Noticeable menubar "flash" when switching perspectives
Build 20021113 Note this is Windows XP. Open a Java Perspective. Open a Java Browsing Perspective. Switch back and forth between the two. On my XP machine I can visibly see the menu bar "shrink" as menu items are removed, then "expand" as menu items are added. It actually looks like it's animated. Anyway, very noticeable and somewhat strange since I'm switching between two perspectives that have the same base menus (i.e., the menu bar for each perspective is the same).
bundles/org.eclipse.jface/src/org/eclipse/jface/action/MenuManager.java
* 
 * @param newOverrides the overrides for the items of this manager
 * @since 2.0
 */
public void setOverrides(IContributionManagerOverrides newOverrides) {
	overrides = newOverrides;
	super.setOverrides(overrides);
}
/* (non-Javadoc)
 * Method declared on IContributionItem.
 */
public void setParent(IContributionManager manager) {
	parent = manager;
}
/* (non-Javadoc)
 * Method declared on IContributionItem.
 */
public void update() {
	updateMenuItem();
}
/**
 * The <code>MenuManager</code> implementation of this <code>IContributionManager</code>
 * updates this menu, but not any of its submenus.
 *
 * @see #updateAll
 */
public void update(boolean force) {
	update(force, false);
}
public void update(String property) {