Bug 51665 [CoolBar] Extra flashiness when switching between perspectives
build I20040210-0800 In same window, - open a java perspective - open several java editors - open debug perspective - switch back and forth between java and debug perspectives The coolbar is noticeably flashier than it was in M6.
bundles/org.eclipse.jface/src/org/eclipse/jface/action/CoolBarManager.java
IContributionItem[] items = getItems();
            for (int i = 0; i < items.length; i++) {
                
                
                
                
                items[i].dispose();
            }
            coolBar.dispose();
            coolBar = null;
        }
        
        if (contextMenuManager != null) {
            contextMenuManager.dispose();
            contextMenuManager = null;
        }
    }
    /**
     * Disposes the given cool item.
     * 
     * @param item
     *            the cool item to dispose
     */
    private void dispose(CoolItem item) {
        if ((item != null) && !item.isDisposed()) {
            item.setData(null);
            Control control = item.getControl();