I use the following code to show menu of items ordered by the creation time.

<dtml-in expr="a.b.objectValues('Folder')" sort="bobobase_creation_time">
<a href="&dtml-absolute_url;"><dtml-var title_or_id></a>
</dtml-in>

this doesn't do what I expect it to do.
The items are reordered almost all times I select one of them.
And the reordering is not consistent. Random behavior is seen.
Please throw some light.