I noticed this too. In the original, the left and right arrows rotated you. In this, they correspond to 'face left' and 'face right' respectively.

The difference is, in the original if you were facing left and hit the right arrow, you'd rotate one position to the right. This would put you as facing down again. In this, if you're facing left and hit right, you immediately face right. To face down you have to press down.

It's still confusing my muscle memory :(