I know this has been an issue in a previous release, and I think it’s crept its way back into the current release.
On writing a long message in a group ride, zwift crashes. I know a number of team members are experiencing the same issue unforuntately.
(For me, it was typing on to the computer, not through the companion app (although CA was open), subitting the message, then following up with another message, and boom, I’m out. For others it seems to be a similar thing in terms of messages, although i’m not sure how they’ve been inputting them.)