Bug 314623 [Mac] Toggle toolbar button is missing in the first workbench window
Only for the first workbench window, the button is missing. From the second window onwards it comes correctly. Looks like a regression in 3.6, in earlier versions it works fine.
bundles/org.eclipse.ui.cocoa/src/org/eclipse/ui/internal/cocoa/CocoaUIEnhancer.java
/*******************************************************************************
 * Copyright (c) 2008, 2009 Adobe Systems, Inc. and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     Adobe Systems, Inc. - initial API and implementation
 *     IBM Corporation - cleanup
 *******************************************************************************/
package org.eclipse.ui.internal.cocoa;
import java.lang.reflect.Constructor;