On Friday,  5 Jan 2018 at 13:10, Nicolas Bercher (Aʟᴏɴɢ-Tʀᴀᴄᴋ) wrote:

[...]

> Is it possible that this setting is set by Debian packagers?
> I ask this because I reproduced this bug with and without my
>  ~/.emacs[.d/] files.

It's the default for org (at least now, as far as I can tell).

> But I ashamedly don't know how to set it permanently in my  ~/.emacs!
> Would you please help me on this?

Easy: describe the variable

  C-h v org-link-search-must-match-exact-headline RET

and then click on the "customize" link near the end of the
description.  Make sure to "Apply and set" the change you make.

-- 
Eric S Fraga via Emacs 27.0.50, Org release_9.1.6