Bug, git rebase -i does not abort correctly

rebase scripts are too much for me, so I'll play the user reporting bugs this time :)

Instead of doing

    $ git rebase -i --onto origin/master @~3

I sometimes accidentally type

    $ git rebase -i origin/master @~3

("rebase -i" is actually an alias, which is why I never forget to type -i)

Usually the todo list in $EDITOR shows noop, I realize my mistake and try to abort it by clearing the todo list before saving and closing $EDITOR. The problem is, HEAD is moved away anyway (to origin/master I think) even if rebase is supposed to abort the operation and leave HEAD untouched.