GS 3.1: GSAUTOSAVE blocks saving of pages

[Connie]

well, it is said the autosave interval is in seconds, so 900 seconds = 15 minutes, right?

For the first time, I had this option enabled at a site, in the latest version GS 3.1, not in Beta-version:

Code:

# Autosave within edit.php. Value is the autosave interval in seconds
define('GSAUTOSAVE', 900);

and like it was reported in one of the BETA-threads, after activating this option, pages get autosaved, but to no avail,
you cannot save the pages (save buttons do nothing in FF) and the autosaved page does not appear in the page list.

Is this a bug or did I misunderstand something?