ajax_post_edit in 1.4

...does not appear to fully work.   When clicking 'edit' you get the options between 'quick' and 'normal' just fine.  If you select 'normal' it sends you to the edit page just fine.  If you select 'quick' it gives the red 'loading' animation and never lets you actually edit the post.

I was told it would work: http://punbb.informer.com/forums/post/141882/#p141882

Perhaps this is because it's not for version 1.4?  Did something change between 1.4RC2 and 1.4?