Create a glossary with an item and enable it's linking. Create a module and use the glossary term Open mod/glossary/showentry_ajax.php in your editor and have it echo a string out (e.g. echo "foo" at the top of the script). Click on the use of your glossary term Confirm that you were shown an ajax exception explaining that there was an error Remove your changes and refresh the page Open a second tab in your browser and logout at this tab Back in the second tab, click on the use of your glossary term Confirm that you were shown a JavaScript exception