sagrsccr wrote:That algorithm is stupid...do this one instead: M U M Ui Mi Ui Mi 2U M
after that, use the alg to flip the 2 edges (which you should already know) and then parity is gone. Also, you are wrong...parity can also appear as 2 opposite edges switched. I'm not sure if 2 adjacent edges will be switched. The parity alg works by shifting the centers and messing with the top layer. However, since you dont have centers here, it only fixes parity and doesn't do anything to your cube.
EDIT: Just tried it and happened to get 2 adjacent edges swapped. So now i'm sure that 2 adjacent edges can be swapped.
I have a Rubik's Void with two opposite edges in the final layer with positions swapped (not flipped). I've tried your fix, but it ends up messing up the cube and not fixing the error, so maybe I'm not applying it right, or maybe you need different fixes for different states...
Can you describe your definition of M and Mi (no offense here, just that people do it different ways.)
ISSUE: Final layer all correct, but two opposite edges have positions swapped.
I have also had a void parity issue where two opposite edges are flipped, but the situation can't be undone by the standard final layer moves.
None of this happens on a normal cube, only on the void.