Flux deflection or flux fringing effects is appeared when locally saturation in core limbs is possible. In below figures which have drawn according your explanation, we front to different flux distribution in core limbs. In figure 1, the turning direction of face 1 primary winding is similar to face 2 of same winding and as you see we front to a good flux distribution in all limbs of flux path in this case. In figure 2, that mentioned direction are opposite and we face to saturation probability in some zone of flux path can be caused flux deflection or fringing effects generally. 