Tor Kringeland <tor.kringeland@ntnu.no> writes:

> Ihor Radchenko <yantar92@gmail.com> writes:
>
>> Can you reproduce the problem starting from emacs -Q?
>
> I did.  The bug only occurs if there is no newline at the end.  So for
> example if you open a new buffer and don't save it, the bug should
> occur.

Aha. Not saving is an important piece of information.
(said the person with compulsive saving syndrome)

Can you test the attached patch?

Best,
Ihor