It seems various udon or other various things for worlds do not properly sync between the two branches causing networking discrepancies between them. For example, if a person on live writes with a world marker, the person on open beta will not see it, or if a person in open beta flies a jet, the person on live won't see it as well.
Making a canny in case this could be rectified but assuming this was expected.
Edit: Actually I wonder if something more was changed because most of the scripts in Evolvedant Arcade straight up do not work on the OB even in an instance by myself.