autosave currently only works on existing cards.
secondarily:
this really hinges on support revisions for unsaved cards.
arguably, autosave really needs a work-over with design to address the secondary concerns mentions in issues.
and comments (separate ticket?)
Please please add this. I keep losing work because I'm trying to do too many things at once and invariably forget to open in a new tab to make a new card.
re comments, autosave should work implicitly once this ticket is addressed and we've completed the commenting overhaul