The wikitext
[[Lista d''e Paise d''o munno]]
is rendered correct as
<a href="..." class="new" title="Lista d''e Paise d''o munno">Lista d''e Paise d''o munno</a>
without interpreting the single quotes as italic/bold. See T6598/T13707.
But the same wikitext as selflink on the page https://nap.wikipedia.org/wiki/Lista_d%27%27e_Paise_d%27%27o_munno is rendered as
<a class="mw-selflink selflink">Lista d<i>e Paise d</i>o munno</a>
Expected result:
<a class="mw-selflink selflink">Lista d''e Paise d''o munno</a>