Nice find! As long as you use Migrate to Latest Update (recently renamed Restart Servers for Updates - announcement) players will still be together after reconnecting even if they are teleported individually (fyi @bvetterdays).
Unfortunately, there’s been some other issues coming up in the past week that have pulled us away from this. We haven’t forgotten about this issue, but can’t give an ETA on our next fix attempt yet. Until then, I recommend using this workaround