Restarted a new game to have a play through of the new content and UI redesign.
Issues we found:
When a non-host player builds a hologram grass wall or floor into a completed piece, sometimes for the non-host players that building piece is invisible. Non-host players could walk through the invisible wall etc, the host player reported seeing their character face plant into the wall and skitter along it. After a period of time the non-host player teleports to what I assume is the 'correct' position as far as the host is concerned.
Logout / in fixes the build piece issues, but fundamentally there seems to be an issue in maintaining a consistent view of the world between the host and the non-hosts.
We also had issues with the hotpouch bar for non-host players seemingly randomly switching items, and ignoring the pinning/sticky setting.
