This occurs in both 1.9.x and 2.2.2.
If you have a category total, or course total hidden in the gradebook, and then add a grade item, it makes all category and course totals visible.
I don't understand why this is the default behavior. With that behavior, the instructor has to remember after adding any grade item, to rehide any totals he might have hidden before.
Thanks for any insights on this behavior.