Attached I send MC's display of some "exotic" filenames (attachements, left panel). These files were created by Thunderbird, they are spam mails saved using EML format. System: Windows 10.
It is a security risk if "something" in filenames is able to manipulate MC's behaviour.
BTW, your built-in zip functionality changes filenames (2nd attachment, right panel). If it is documented and user may switch this feature on/off, then it is OK. If not, it is a bug.
For reference, the same files packed using external 7z application keep original file names intact (1st attachment, right panel).
ADDED: Sorry, I didn't see "[BUG] Unicode NOT work" topic, so this is basically a duplicate of it. But maybe attachments will be helpful. I am using one of typical Windows fonts (Consolas), so it is not the cause of the problem.