Any company funded by venture capital is coming for your money eventually, whatever they say in the short term.

OP I’m fairly certain your issue is with your music file metadata rather than the software. I suspect if you clean it with musicbrainz picard or open it with a tag editor you will find its using slightly different characters in different metadata fields. You can test this by loading up one of the offending files, clearing all of its metadata and see if that looks better!