I'm using LE on my RK3399 based SBC called NanoPC-T4. I use another service which creates Metadata for for the library (TV Shows, Movies etc) and it works all good.
Now the problem I'm having is when I completely delete a TV Show or Movie folder and then do Clean Video Library, the entry is not being removed from the library (episodes are deleted for shows).
If the corresponding folder is deleted, its entry should be removed up cleaning library, but it doesn't work. Only way to remove the entry is to goto it and do Manage... > Remove from library.
I'm using "Local information only" and media & metadata is managed by Sonarr which then triggers Library Updates in LE.
Edit 1: Forgot to mention, I'm using the AuraMOD AIO Skin and have created custom main menu items. If this info is needed.