Not sure if they exactly are costume problems...
In the water if one has a stealth power active the whole part undewater disappears
Stealth Active
Stealth Not Active
Another problem is with the pants when one is stealthed the pants become half transparent and the leg shows in transparence only it stops abruptly at the knee.
lower legs showing
However depending on the angle the legs seems to disappear
Legs not showing and i thnk this is what it should be.