AbstractAjaxTimerBehavior triggered more than expected after a new Ajax rendering

When an AbstractAjaxTimerBehavior is rendered in an AjaxResponse due to another Ajax callback than the one triggered by the timer itself, it sends a new setTimeout javascript call to the client, causing the client to call the timer more frequently than expected: x+1 times as expected, where x is the number of times the behavior is rendered in a separate Ajax response.