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 item;
        
        if (contributionList.size() != 0) {
            item = (IContributionItem) contributionList.get(0);
            if (item.isSeparator()) {
                contributionList.remove(0);
            }
            ListIterator iterator = contributionList.listIterator();
            
            while (iterator.hasNext()) {
                item = (IContributionItem) iterator.next();
                if (item.isSeparator()) {
                    while (iterator.hasNext()) {
                        item = (IContributionItem) iterator.next();
                        if (item.isSeparator()) {
                            iterator.remove();
                        } else {
                            break;
                        }
                    }
                }
            }
            
            item = (IContributionItem) contributionList.get(contributionList
                    .size() - 1);
            if (item.isSeparator()) {
                contributionList.remove(contributionList.size() - 1);
            }
        }
        return contributionList;