The Wonderland Board

In Return to wonderland deluxe edition there is custom levels. In one of them there is an box that seems to be pushed into water but then there is a invisible box after it. If u push the invisible box into water it will become visible but then sink. However, after it sinks, You can stand on it like it was floating and hed not sunk. Does anybody know how to do this? Is it some kind of glitch? If it isn't I have a hunch it has something to do with plasma boxes.

There is something known here as the left side bug. People use it to their advantage sometimes.

You can see some previous questions and popo's explanation here:
http://www.pcpuzzle.com/forum/viewtopic ... t+side+bug