This is a Ajax function calling AjaxLoad() which can't be called because obviously the bug_update_page.php is throwing a JavaScript error when clicking that link. The error is "Uncaught ReferenceError: loading_lang is not defined" in javascript/min/ajax.js

The reason for this error is /core/html_api.php line 400:

<code>

echo '<script language="text/javascript">var loading_lang = "' . lang_get( 'loading' ) . '";</script>';

</code>

is wrong as the correct attribute should be language="javascript" and not text/javascript.

Thanks for reporting
This was introduced by 0012354

Well, the committed change in 0012354 changed it to language="text/javascript" which is definetely wrong.

There is
language="javascript"
or
type="text/javascript"

but I haven't tried yet if the latter works.

Agreed, good catch.

Thanks for reporting/triaging.

I'll commit this for the next release.

Can confirm the fix works as expected.

Thanks Jürgen and Roland. I have committed a fix to the problem.