Draft titles are permanent?

I'm loving the drafting features here, so I've been using that to create rough posts on the fly for proper writing/editing later. This means that I sometimes resort to keymashing to create interim post titles, figuring that I'll fix those later. But when I do fix them later for final posting, only the title in the final post is fixed, while the permalink for the post stays a keymash, so I have some... awkward permalinks. I'm not sure if this a bug exactly, but I thought I'd share!