IMAP account MIME attachment Problem

Hi everyone,

In the Apple Mail app, my IMAP account is showing all attachments as “MIME attachment” instead of the original files. The problem started a few months ago.

Other mail apps display the attachments correctly.

I’ve already tried removing and re-adding the account, but that didn’t help.

I checked with the IMAP server provider, and everything is fine on their end.

Does anyone know what might be causing this?