Only one player appealed because everyone else was watching from the ball from the corner and the offside player was not where they’re looking and it happens so fast. The linesman should never miss it though, and spectators could tell it was offside.

You can understand the ref not giving the Gunnar tug on Rudiger, and the first pull on Morrison, but he has to eventually give one of the numberous fouls on Morrison that followed. It was also a red on Zohore. Shocking officiating.