Some macros don't render in Macro browser or preview tab when using Internet Explorer ('AJS' is undefined error)

Confluence macros containing Javascript that attempts to interact with the Atlassian UI Javascript components ("AJS") can cause errors in some circumstances when the macro is executed outside of the "view" context of a page.

We are still investigating the underlying cause of the problem, but at this stage it only seems to happen if the macro attempts to call AJS methods before the document ready event is fired.