Hi :)
I was following through your tutorial and noticed that anchoring the minimap using (maxSize.x - 30, 30) actually made the minimap disappear. I experimented a bit using different methods, couldnt actually get it to anchor to right correctly. Using the typical (10,30) works fine to anchor to top left.
Im using 2020.1, might be an editor change?
Thought you should know :)