My partner and I play DST on PS4 and we love it, but as of this most recent update we have been having some issues. When I enter the caves (I am the host of the game) everything is fine, but when he (as a guest) enters the caves, he is disconnected from the game and is unable to rejoin unless we roll the save back to before he entered the caves. I am assuming this issue has something to do with the new update, and has been tested on retrofitted worlds as well as new worlds.
Guest attempted to enter caves, was disconnected. The host did not experience this issue.