I'm a teacher and this just caused a big problem in one of my courses. One of my assignments was to do research on a topic and hand in the public link. One section's due date was a week ago. They completed it fine. The other section's due date was today, and all the students started complaining that they couldn't find any way to generate a public link. I was getting really annoyed at them and giving them failing marks. When even the smartest students had the same problem, I checked it out for myself and realised that the button to create a public link was gone. My old shared notebooks still