Carnaval Beats radio station - 2 folders in custom music

Product: The Sims 4
Platform:PC
Which language are you playing the game in? English
How often does the bug occur? Every time (100%)
What is your current game version number? 1.107.151.1020
What expansions, game packs, and stuff packs do you have installed? All DLC up to 4 July 2024
Steps: How can we find the bug ourselves? See notes below. Too much to write here.
What happens when the bug occurs? The carnaval beats station generates two separate folders in Documents/The Sims 4/Custom Music but should only be one. Mp3 songs in "Carnaval Beats" folder only shows up in the options menu but won't play in-game. Mp3 songs in "Carnaval" folder only plays in live mode on stereos but won't show up in options menu.
What do you expect to see? Only one folder for each radio station in the game. So either "Carnaval Beats" or "Carnaval", not both.
Have you installed any customization with the game, e.g. Custom Content or Mods? Not now. I've removed them.
Did this issue appear after a specific patch or change you made to your system? No

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To find the bug:

1. Delete BOTH the "Carnaval Beats" and "Carnaval" folders in Documents/The Sims 4/Custom Music folder, if they exist.

2. In main menu, locate the music tab in "Options"/"Game Options" and click on the Carnaval Beats station. Disable all the default songs in there. Go back to the Custom Music folder - the game has generated a "Carnaval Beats" folder. Put a random mp3 song in there. Reload game and see that the custom song shows up and plays in the music tab in the "Options"/"Game Options" menu.

3. Load into a savegame now and buy a stereo. Select "Carnaval Beats" to be played in-game - nothing will play despite that a song has been put into the "Carnaval Beats" folder. Strangely, the custom song shows up in the music options and plays there. Go back to the Custom Music folder - the game has also now generated a "Carnaval" folder. Quit game.

4. Now place the same mp3 file into the "Carnaval" folder and reload into live mode. Play Carnaval Beats on a stereo - audio now plays in-game.

5. Quit game and delete the mp3 file from the "Carnaval Beats" folder, but leave the mp3 file in the "Carnaval" folder. Reload and play Carnaval beats on a stereo - the custom song plays in-game. Now locate the music section in "Options"/"Game Options" - the custom song doesn't show in the Carnaval beats section in the options menu, but it plays in-game.

It seems that the game generates two custom music folders for the carnaval beats station:

- songs in "Carnaval Beats" only shows up in the options menu but won't play in-game
- songs in "Carnaval" only plays in live mode on stereos but won't show up in options menu