Custom post type menu_order quick edit bug?

Updated to 3.3. I’ve registered some custom post types, and when I choose “Quick Edit” from the “All [custom]s” screen, all menu orders register as 0, no matter what the order value actually is. Thus if I save any changes, the menu order for that post is reset to 0, wreaking havoc on the site’s front-end.

I tried disabling plugins and believe this to be a WP bug, but thought I’d check to see if anyone else was having the problem before troubling our noble core programmers with it.