Basically what the title says. I have uploaded a video to YouTube for you to see the bug, you can see it first at the 8:24 mark and a bit after that.
Attached are the output_log, the save file and the DxDiag.
PS: Yes, in the video you can see a graphical error with both water and the background (Gasses). This is a bug related to my recording software and has nothing to do with the bug I'm reporting with this thread.
Let dupe conduct science and clean the toilet after that. Details in the video.