For me couple of things happen along with this bug:
- The UI doesn’t show up e.g. the Tracker UI doesn’t show when this bug happens. Tracker UI only shows up only game shows END BUTTON/START BUTTON after many attempts of launching the game.
- The Player Character acts like in Edit mode - when I tap Spacebar twice the character floats and stuck in the floor, there is non recovery possible unless manual Respawn from settings. (this is like in Edit mode, you double spacebar to make the character float for fast traversal, this should not happen Game Mode)