Found this odd bug, and I think passaging triggered it. I slept in a shelter, the hibernation menu showed up as normal, and I used a passage. After using the passage, I had a dream sequence, and then the hibernation screen reappeared with only the art and the Exit and Continue button. The art was glitching out like crazy and I couldn't press any buttons. Had to Alt F4.

Also, when I reopened the game, my slugpup was duplicated XD

Here's a vid of the bug, if Steam lets me post it
https://youtu.be/5flq0HVgxbA