Very high Moment values at walls

Hi,

I am analyzing a two way RC Podium slab, 16" thick with walls and columns as support. The walls (all the walls) have extremely high in plane moment values under All Dead Loading and under Live Loading. The way the walls and columns are oriented, I would expect it to have out of plane moments and not in plane moments. The floor is 13.5' high. What could be the reason for this?