It had been possible to select "Unknown” as the Panel marking for OSB for interior wall side. Unknowns are not supposed to be in the interior wall selections because the program does not design for unknowns on the interior side unless both sides are the same.

Selecting "unknown" resulted in a zero shear deflection for that wall to be zero. Shear deflection is ordinarily only a small component of deflection, so the impact of selecting unknown was often negligible