Is anybody having this issue? I am signed in with messages in the cloud turned on on my mac, ipad, and iphone. (All running public betas) However, I have older messages on my mac that are not syncing. I've tried signing out and back in, that just grays out messages in icloud. With a restart, it's back on but nothing ever syncs. I put in a ticket for this in the feedback app. Is their currently a workaround that I'm missing?