Big Sur Mail Attachment Paperclip Icon Missing
Big Sur has lost the paperclip icon for mail attachments in mail column view. It is Gmail Internet IMAP mail accounts. The mail client has lost the attachment data and will not find mail with attachments when I filter the mail by attachments in the view menu.
This is a Big Sur issue on two machines I have after upgrades from Catalina that showed the icon. The mail has gone through multiple OS upgraded without the issue and works fine on ipad and iphones with iOS14.
iMac 21.5″ 4K, macOS 11.0