Bug 47207 call hierarchy: Enablement of "Search Scope" item on view menu is wrong [call hierarchy]
At least on Windows NT/2000 this item is shown as disabled until the user clicks it it which case the submenu opens. I have been looking into this problem but without any results so far. Any suggestions are welcome.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/callhierarchy/SearchScopeActionGroup.java
fSelectedAction = null;
        }
    }
    /**
     * @return
     */
    protected IWorkingSet getActiveWorkingSet() {
        if (fSelectedWorkingSetName != null) {
            return getWorkingSet(fSelectedWorkingSetName);
        }
        return null;
    }
    private IWorkingSet getWorkingSet(String workingSetName) {
        return getWorkingSetManager().getWorkingSet(workingSetName);
    }
    /**
     * Sets the new search scope type.
     *  
     * @param newSelection New action which should be the checked one
     * @param ignoreUnchecked Ignores actions which are unchecked (necessary since both the old and the new action fires).
     */
    protected void setSelected(SearchScopeAction newSelection, boolean ignoreUnchecked) {
        if (!ignoreUnchecked || newSelection.isChecked()) {
            if (newSelection instanceof SearchScopeWorkingSetAction) {
                fSelectedWorkingSetName = ((SearchScopeWorkingSetAction) newSelection).getWorkingSet()
                                           .getName();
            } else {
                fSelectedWorkingSetName = null;
            }