Easily reproducible. Press F1 after you've been killed, while the camera is zooming in just before the death sequence. When you leave the help screen you're greeted with a blank screen (while the game loads presumably) which eventually clears to reveal your last save game. Except you're missing. So is your pet, the wildlife, enemies, whole layers of the background imagery, and even the water! It's quite disorienting.
It can be corrected by entering F1 and exiting again, but I don't know if that leaves any lingering glitches or not. And it's very disturbing if you're not expecting it. You can still move around and everything, you just can't see it.
