Session timeout redirects to doeditpage.action after draft autosaves causing lost drafts

Steps to reproduce while editing a page:

1. invoke a draft autosave (either wait for autosave interval or press Preview) while editing a page
   Draft is now in the database, user is viewing the editpage.action based page (http://.../confluence/pages/editpage.action?pageId=xxx)
2. wait for SSO timeout
   • click Save which redirects user to reauthenticate
     user is presented with doeditpage.action based page (http://.../confluence/pages/doeditpage.action?pageId=xxx) instead (which should be editpage.action)
   • this can be simulated by opening another tab and entering the doeditpage.action equivalent
3. user is presented with the original page with no title as the additional form data was not transmitted
4. user has to re-enter data, if they save they loose the draft

Workaround is to open another tab to login after timeout