Is the filename of an attachment restricted to only certain languages?

Is the filename of an attachment restricted to only certain languages?

Hi, I tried to create a file card in a notebook, but I encountered an issue: when the filename of an attachment is in languages other than the main ones (such as English, Japanese, or Simplified Chinese......), syncing stops or the filenames become garbled or display as underscores. I tested this with Korean and Traditional Chinese filenames.

Since I don't experience any issues with Zoho WorkDrive or other Zoho products, is this a system failure, or is the service primarily designed to support only a limited set of languages?