Yahoo Product interview questions

initial phone interview followed by 5 pre-set interviews. All interviews went excellent. I was interesting that all of them were set in advance and not one at a time as i progressed in the process. After completing all 5 interviews and hearing good reviews from the interviewer, i waited 2 weeks to get a rejection notice without much explanation from HR. Independently i reached put to the hiring manager to understand the cause. There was an attrition in the team and the position reqs changed, now looking for full dev fluency + product and marketing background. Bad process all in all. P.S. 4 months later they are still looking to hire....