Looking at ULS on https://translatewiki.net/wiki/Special:Translate?filter=%21translated&action=translate&language=lag&group=ext-0-wikimedia, I found three instances where a tooltip displays language title in the original language - e.g. instead of
<li title="Mingrelian" data-code="xmf"><a class="autonym" lang="xmf" dir="ltr">მარგალური</a></li>
the tooltip will be as following:
(1) <li title="արեւմտահայերէն" data-code="hyw"><a class="autonym" lang="hyw" dir="ltr">արեւմտահայերէն</a></li>
(2) <li title="फ़ीजी हिन्दी" data-code="hif-deva"><a class="autonym" lang="hif-deva" dir="ltr">फ़ीजी हिन्दी</a></li>
(3) <li title="𑢹𑣉𑣉" data-code="hoc"><a class="autonym" lang="hoc" dir="ltr">𑢹𑣉𑣉</a></li>

