It really would help the developers if you found the exact revision this first occurs in (look up bisecting to cut down how many revisions you have to try) then file an issue report on Dolphin's Google Code page. It's more helpful if they don't have to spend time getting that info themselves, and increases the chances of a speedy fix (or a fix at all). Thanks for bringing it up though, it's just that a little more info can go a long way.
@JMC47 -Are you sure? I don't think the game is supposed to look like that (I do not own it, cannot verify). OP said 4.0 does not exhibit those glitches as well (unless 4.0 really is just inaccurate and the game does that on real HW).
EDIT: NVM, I remember talk about the shadows now. Still is there an issue report on the rounding errors, or is it something that's can't be reasonably fixed atm?
@JMC47 -
EDIT: NVM, I remember talk about the shadows now. Still is there an issue report on the rounding errors, or is it something that's can't be reasonably fixed atm?