The Big Shadow sprite is meant to be 2x2 tiles in size, but only the top-left tile is selectable. The rest of the shadow appears as tiles from page zero.
Notice the Link tiles below these Boulders:
EDIT: I forgot the New Bug icon. :moo:
Big Shadow not displaying correctly.
That's because the large shadow probably uses 4 tiles.
Whoops! Turns out it wasn't working properly for me either. So can someone please confirm this?
Wasn't implemented back then, works now. 😉