Expand macros in multiple future macros only expand properly for last future macro invoked

When a page contains multiple instances of the future macro which contain expand macros, only the expand macros in the last future macro invoked expand properly. Expand macros on the other (not-invoked-last) future briefly expand then immediately de-expand.

Why Confluence Expand macro fails:
Confluence expand macro binds expand-control elements with "click" and "keyup" events when expand-control found on a page. In case of future macro, since it loads asynchronously, binding occurs multiple times for the expand control which loads first.

Proposed Fix:
Confluence expand macro shall unbound all events before binding to events, so that events already bound to elements will be cleared. And then bind events to elements afresh.

$elements.length && $elements.unbind(eventNames); // FIX: unbound events before binding
$elements.length && $elements.bind(eventNames, helper.createToggleFunction(eventMatcher));

With this fix put in place for confluence expand macro, it works well with multiple expands with or without future macro.