Special Reinforced Concrete Shear Wall Boundary Zone Per ACI 318-14 18.10.6.2

I have a shear wall that is made up of 3 wall elements along its length and when the software calculates C limit it uses only the shortest wall segment at the end of the wall rather than the full wall length.

Why doesn't the software use 13' as the wall length when checking C limit rather than 50'?