Examples:
-The underside of redstone dust.
-When viewing any half-door texture, any sides you are not currently at.
-Same as doors but for half-bed texture, though for some reason does not affect the legs.
-Viewing the side of ladders, sides of rails. and the top/bottom of grass in particular angles, it will make them seem invisible.
-Not really anything to do with the bug, but I think it would be awesome if they changed the hitboxes of EVERTHING to be only what you can actually see, although this would be extremely hard to code.