With Vintage active, when in multiline mode, pressing ESC should not go to COMMAND MODE

I'm trying to get used to using vi bindings on Sublime. I know the basic and I like it. But I think I found a bug (or I think it should be a bug). When Vintage mode is active, pressing ESC in INSERT MODE should change you to INSERT MODE (and it does). But... when having more than one cursor (multi-edit), when pressing ESC should only get you out of multi-edit and not got straight to INSERT MODE.