I am having a bug where it seems like random items in my inventory are being marked as quest items. My giants toes and wines are quest items, and if I pick up anymore of either, then they get marked as quest items too. Its quite annoying.

Also, I have run across several giant squares in the water where it does not show the surface of the water, so it looks like the water is invisible. This one doesnt bother me nearly as much as the above one.