In MacOS Messages, most outgoing messages have white text on a blue background (or green if it’s SMS). But I have one conversation where one of the outgoing messages is blue text on a white background, with a blue outline around the message.
If I click on that message, the conversation is replaced with just that one message (which has reverted to the usual blue background) followed by one reply from my friend, similar to what happens when you right-click on a message and choose Reply.
Right-clicking on this message doesn’t bring up the menu at all. And when I enable “Show Times”, there’s no timestamp next to this message.
Why is this message different?