Steps to Reproduce

click either of the links:

<zk>
	<a href="#bookmark1" label="goto bookmark1"/>
	<a href="#bookmark2" label="goto bookmark2"/>
</zk>

Current Result

most of the time 2 separate AuRequests / WsMessages are sent to the server

1. onHistoryPopState (immediately)
2. onBookmarkChange (after a delay <250ms)

Expected Result

both events should be sent at in a single request / ws message

Root Cause

onBookmarkChange relies on a fixed interval of 250ms

The check if the bookmark has changed can be triggered immediately during the event handling for onHistoryPopState to avoiding the delay and double request.

This requires exposing and calling the checkBookmark function.

Alternative is firing a client side event and listen to it from bookmark.js.