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The shear strength for an unblocked wood-based shearwall, according to the asterisked note to CSA O86 Table 9.4.4, is the shear strength for a blocked shearwall 600 mm stud spacing and 150 mm edge nail spacing, regardless of the actual composition of the shearwall, multiplied by the Jub factor. Shearwalls instead used the actual nail and stud spacings for the shearwall to determine shear strength, ignoring the note. Since 600 mm stud and 150 edge spacing are the maxima, this created non-conservative resistances. The program now applies the note.
Note that the asterisked note for a strength increase in Table 9.5.1A is not applied, even if the actual stud spacing is 400 or less, because it is overridden by this requirement.