There are a few places in Guru this happens but for example, I am looking at the courses I created and I want to make an edit to say one category of courses. I chose the category from the dropdown and it works as expected and shows me just the courses in that category. I open one and when I am done and save to go back to the list all the categories are visible again and I again have to click the dropdown to isolate the groups to the one I am working on.
It would be nice if Guru would remember my selection so when I save or go back to the course tree I am still only seeing the selection I chose when I started.