one of my collabs is having some issue with message on her mac (it's fine on her iphone). she'll get a duplicate thread (showing as "new message to NAME") when she sends a message; another one of her threads was listed to PERSON A, but there was part of a thread with PERSON B in it... this was fixed by closing/re-opening the app.
the 'new message to' duplicate thread remains...
the 'new message to' duplicate thread remains...