OMG I figured it out. I compared the post Win 11 mp3 files vs the ones I had from Win 7... This is so trivial Im laughing. If the MP3 does not have indexing checked, the meta data of the file wont display in the player. The fix is simple:
Select MP3 file(s), right click, Properties, Advanced then check the box "Allow this file to have contents indexed in addition to file properties". Ok and apply. Presto! All the song info is visible in the music player.
I'll mention this cause it could help someone else: I have my MP3 folder set to be indexed but if the individual files are not set to be indexed it breaks the information being displayed in the music app.
So it may not be a bug. Its that MS is maybe shifting gears on how meta data is read and stored, relying more on Windows Search (indexing). Meanwhile older apps like WMP reads the file properties directly.
If you edit the file properties within the music app the information is saved in the files properties. So that works the same as WMP. But again if the file is not set to be indexed, well, you get it.
