Symptoms
When you have a client script making an asynchronous GlideAjax using "getXML" and if you use "getAnswer()" function the client script can be prone to inconsistent behavior
Release
ALL
Cause
getAnswer() API is supposed to be used only for Synchronous GlideAJAX
Resolution
When you are using getXML("function call") use
var answer = response.responseXML.documentElement.getAttribute("answer");
instead of
var answer = <synchronous object>.getAnswer();
Inside the function definition