bug#26056: 26.0.50; package-menu-execute prompt to save modified buffers

[npostavs]

Tino Calancha <tino.calancha@gmail.com> writes:

> Each time i upgrade packages i receive a prompt to save modified
> buffers visiting files.
>
> emacs /tmp/foo
> abc
> M-x package-list-packages RET
> U x ; This prompt me to save `foo' for each package upgraded.
>
> I didn't check it with `emacs -Q', so i cannot discard the possibility
> that the issue arises because my own customization.
> Can anyone reproduce this?

I guess this is Bug#25964/Bug#25340?