Messages on Mac started having a gray circle next to my sent bubbles
Messages on Mac started having a gray circle next to my sent bubbles. This started today 01/23/20 and the same gray circle wth the letters "MD" inside, like an icon for a contact. BUT it is to the right of my sent bubbles, in current messages and also all others in my Messages box, when opened the circle with MD are next to mine on the right. On a MacBook Pro, Mojave 10.14.6. All messages are arriving to the recipient, just don't understand where the gray circle is coming from. Screen pic imported.
Tom
MacBook Pro Retina