It has been a while since I looked at this picture, but I remember this condition quite well. As some context, this condition occurs at the fourth floor level of a stairwell. This wall condition spans from the roof framing down to the intermediate landing between the third and fourth floor. If we look a bit closer, as in the photo below, we can see that only two studs run the full wall height at each side of the window. This project was located in a region with a wind speed of 100mph. As is, this condition required remediation to the mullions and the header-mullion connections to satisfy design requirements. Had the mullions between the windows been constructed full height, instead of spanning between the headers, the load path would be easier to follow and require less remediation.