When attempting to insert an audio (mp3) file via the Media Manager ("Insert/Edit Media" button) the "Insert" button will not work unless a width and height is input manually. This was never required before, and audio files should not require a custom width/height.
I have only observed this on audio files; video files work normally, as do images and links.
I have only observed this on audio files; video files work normally, as do images and links.