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
return null;
				}
				public Integer getAccelerator(IContributionItem item) {
					return null;
				}
				public String getAcceleratorText(IContributionItem item) {
					return null;
				}
				public String getText(IContributionItem item) {
					return null;
				}
			};
		} else {
			overrides = parent.getOverrides();
		}
		super.setOverrides(overrides);
	}
	return overrides;
}
/**
 * Returns the parent contribution manager of this manger.
 * 
 * @return the parent contribution manager
 * @since 2.0
 */
public IContributionManager getParent() {
	return parent;
}
/* (non-Javadoc)
 * Method declared on IMenuManager.