Yes sometimes the tut is not exactly like it should be. And yes, you can arrive at the destination point in Rhino in many, many different ways. To me that is both the good and bad of Rhino. There are so many ways to do a function that in my case, it makes it difficult for me to grasp.
Sounds to me like something is not set up right with your system and how it is functioning with Rhino. I haven't heard of a bug with the viewports moving or locking in one view. Are you double clicking on the viewport name to open and close? Have you tried the icon on the top tool bar? Same....different?