Here's an old-style hand example.
It's less common on the new-style hands, but it still happens.
(The fact that I got two characters with tridents is an interesting coincidence)
Notice that the axle on Kiina's trident is at a 45o angle, and Gali's is at about a 25o-30o angle.
Also, as far as I can tell, this only happens to hands with something in them.
It's a common issue (in one of the 09 comic centerfold ads it affects all six sets) It's less common on the new CCBS hands, but it still happens, often enough that either this is real, or someone went to a lot of trouble to get a very small detail most people miss anyway.