I have an action to place songs in the %artist%%album% folder, and it works ok for alphanumeric characters (lower and upper case and numbers) but not special characters like $ let alone Unicode.
Here's my action:
Format value: Field =_DIRECTORY Format string = E:\Media\Music\%artist%\%album%
I've tried it both with and without a trailing slash at the end of the format string, and it doesn't affect it at all.
Try it yourself, Put A$ap Rocky or $uicideBoy$ in the artist field then apply the action, it won't work.
Besides that, it looks like a backslash is missing between the fixed and variable parts of the format string. Can you try with E:\Media\Music\%artist%%album%