I would consider that a bug in the web app.
While you were answering I also found that this page can be accessed through music dynamic lists like "Frequently played", "Recently played", "Favourite songs".
Imho this is very useful to music nerds who have several formats and bitrates (MP3 320 / Flac / WAV) or just want to know what is the path of a song, you should promote it rather than hiding it as it already exists. Emby does a great job as a music player for large collections, and since you support music libraries this should be a quick-win feature.
That said, I understand the UI space is expensive (and complex with all those clients) and this isn't a killer feature