The user creates a placeholder using the Japanese language setting. Why does the language change to English automatically after Japanese HTML Email Fragment is uploaded to Vault?
Vault attempts to automatically identify the document language from its source file. It auto-populates the Language field for new documents based on the language detected.
Numerous English words occur at the beginning of a Japanese HTML email fragment. Japanese content occurs after it. Vault language detection evaluates the first part of the file and sets the language to English in this example.
Vault Help Documentation: Document Language