Widget Sidebars only persist for one page load of wp-admin/widgets.php — at Initial Version
|Reported by:||blepoxp||Owned by:|
To reproduce, 1) Go to widgets.php in admin and and some widgets to some sidebar areas. 2) Refresh the screen and find multiple "Inactive Sidebars" at the bottom.
My guess is that this has to do with the prefixes added to the widgets in the changeset mentioned above. I've no one's looked into it by tomorrow morning, I'll research and make a patch.