Solved.

Apparently I had an org installation folder inside ~/.emacs.d, other then
my distribution provided (since org-mode is part of the emacs package).

I deleted it and now all is ok again :)

Tks.

2017-12-29 7:01 GMT-02:00 Marco Wahl <marcowahlsoft@gmail.com>:

> The following message is a courtesy copy of an article
> that has been posted to gmane.emacs.orgmode as well.
>
> Eli Zaretskii <eliz@gnu.org> writes:
>
> >> From: rahuljuliato@gmail.com
> >> Date: Thu, 28 Dec 2017 22:23:59 -0200
> >>
> >> Starting from emacs -Q, table TABs are ok and does the job.
>
> Could you provide an MWE?
>
> >> But if I start with emacs (even without a .emacs file), i get something
> >> like:
> >>
> >> Table:
> >>
> >> | a | a | a | a | a | a |
> >> |   |   |   |   |   |   |
> >>
> >>
> >> then I type something like:
> >>
> >>
> >>
> >> | a | a | a | a | a | a |
> >> |   | sssssss |   |   |   |   |
> >>
> >>
> >> If i press TAB at the end... instead of lines aligned, i get:
> >>
> >> | a | a       | a | a | a | a |
> >> |   | sssssss |   |   |   |   |
> >>
> >
> > If the problem happens without a .emacs file, but does not happen in
> > "emacs -Q", it means the reason is somewhere in the site-init files of
> > your Emacs installation.  So I suggest to look at the init files
> > loaded by Emacs, one of them is somehow causing this.
>
> The described alignment of the colums behaves as documented AFAICT.  See
> the info pages at (info "(org) Built-in table editor").
>
>     "A table is re-aligned automatically each time you press <TAB> or
>     <RET> or ‘C-c C-c’ inside the table."
>
>
> Regards
>        Marco
>
>