Since macOS 27 has been installed on the Mac mini (and iOS 27 on the iPhone, my junk mail headers in the junk mail folder for my xxx.mac.com address have been largely replaced by asterisks. This isn't happening in the other mailboxes I use in the Mail apps.
Is this something new, did some setting change? I would much prefer to see the send and the topic when I review the Junk Mail folder.