The PTS-build for me on Xbox One S is not saving game progress. Once the Mysterious Machine has been activated and I head to the la under the Oak tree the doors are open as they should be.
However, once I log out of the game and log back in, the game save records where in the world I was but NOT the fact that the Mysterious Machine was activated, no inventory contents, none of any items that I build such as the Lean To are present AND the doors to the Science Lab under the Oak Tree.
I need to travel all the way back to the machine and re-trigger it to open the Science Lab doors and travel back.
This happens each and EVERY log out.