Hidden folder are reported as items with extension equal to the name. For example, the hidden folder ".purple" is reported as an item with extension ".purple". That is a mistake. It must be blank in Extension column as the non-hidden folders. See attatched picture. Compare .purple folder and Download folder for example.
Anonymous
I hope this issue is completely fixed recently in the libfm GIT repository. Try it when possible, please, and report back if something is still not fixed. Thank you very much.