Finder file type contains Chinese characters on English-language system

[Jmuccigr]

I notice that my file types for .md files (which MacDown is set to open as the default app) show up in the Finder as "md 文件". That seems inappropriate for my English-language system.

I also wonder if this is goofing up quicklook in Catalina. If the extension is "markdown", the file type gets reported as "Markdown" and ql works fine, but ql is not working on ".md".