I recently used the embed code for an audio file with closed captions (via clicking the "🌎 Use this file" button; you can test yourself by pasting code like

<iframe src="https://commons.wikimedia.org/wiki/File:Maryana_Iskander_self-narrated_biography.ogg?embedplayer=yes" width="300" height="20" frameborder="0" loading="lazy" allow="autoplay; picture-in-picture" allowfullscreen></iframe>

into a code sandbox).

Even when larger heights than the default 20px are used, the file name is never put anywhere, so e.g. if you're embedding a song there's nowhere in the embed that gives the title of the song.

The design of the embed should be improved so that, depending on available space, a title (probably the file name by default, but ideally something customizable) is displayed somewhere.

First reported at this discussion on Commons alongside T404934 and T404935.