When you're in the recordings list, and decide to move a series to a folder, there is a sweet feature that automatically enters the name of the highlighted recording into the folder name box.

If that name has a special character in it, when you go into the folder no recordings are visibile.

Jump into linux and the files are there. I've renamed the folder without the special characters (in this case a colon) and the files then appear in the UI.

Perhaps the sweet feature should remove special characters, if there is a technical limitation, or fix it so the listing command (ls) handles the special characters.