character seems to be one or two blocks above where he should be

This first started in 14w06b. When sleeping in a bed your view hovers above the bed, when fishing your fishing line is come from somewhere below you, when standing under water or lava your screen would change to blue or orange as if you were in it (which you already were working on fixing). Other things that might be linked to this problem are the boating issues that you were working one where the character had to jump to place a boat and being unable to fish while in a boat (you hook the boat every time you cast).