This is meant as Feedback, not a Bug report (unless others get the same thing). I suspect it can't be reproduced consistently. Every message (since Mar20) shows a yellow error bar: "Thunderbird thinks this message is Junk mail." [Learn More] [Not Junk] [X] Just as I'm composing this, messages also have inconsistent coloring (picture attached). Since the message says "Thunderbird...", I'm posting here and not google/gmail. NOTE I just tried the Learn More link and may be able to reset the "learning" so this post may have been unnecessary. Still - an unpleasant experience. I did locate the [Reset training data] in Settings and may have to use that. BACKGROUND: I migrated from another Mac in January, that seems to be unrelated. I downloaded several apps from the App Store the day before (Mar 19) but those all seem unrelated. Some Mar20 messages are fine. I'm running Thunderbird 115.9.0 (64-bit) "supernova" and "Thunderbird is up to date" on macOS Ventura 13.6.3 Hopefully this is the end of this story for me! Thanks. Please let me know if other details might be helpful for this discussion.