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). The current code uses a height of 20px, which cuts off half the bar. This can be fixed by changing the code generated, but we should be generating the correct code by default.
First reported at this discussion on Commons alongside two other issues.
