I was having the disappearing menu problem (though my symptoms are slightly unique), so I tried the dev version. It didn't fix my problem. However, it introduced a very bizarre problem.

I have a default theme and a different adminstration theme. With the dev version, when I visited and administration page, the outside areas of the page (it looked like everything outside the page container) was showing my default theme!! It was really weird! But all the administration content was still properly styled in the main page container area using the administration theme. Its like the two themes got intermingled!

Comments

pha3z’s picture

This was being caused by a missing theme region. It was also causing a disappearing menu described in this issue:
http://drupal.org/node/442560

After I inserted $page_top and $page_body into the html.tpl.php, both problems were solved (the one described in this issue, as well as the disappearing menu issue).

$page_top and $page_body must act as a container in the body tag like this:

<body>
<?php print $page_top; ?>

<div id="container">
<?php print $page; ?>
</div>

<?php print $page_bottom; ?>
</body>
pha3z’s picture

Status: Active » Fixed

Marking this as fixed.

pha3z’s picture

Woops. I should have used Closed (works as designed).

My mistake!

sun’s picture

Status: Fixed » Closed (cannot reproduce)