Playlists in subfolders of folders not available in Apple Carplay / Android Auto

[Vasmares]

Plan

Free/Premium

Country

All

Device

(all iOS or Anroid devices)

Operating System

(iOS and Android)

My Question or Issue

Hi,
to organzize my Music I have created folders and subfolders.
Unfortunally it seems that on Android Auto or Apple CarPlay multilple subfolders are not supported.
I can navigate though all folders but when it comes to last folder (where the playlitst should be located) its just empty.
Having a single "layer" of folders and the playlists in there works perfectly fine. But as I add a subfolder, everything in this very subfolder is unaccessable via CarPlay / Android Auto or any Connected Servíce (eg: BMW, MINI)

Does anyone elsé have this issue or can reproduce it ?