Hey @Melissa_Brown,
I know it may not really matter much in the big picture, but just for clarity’s sake in terms of discussion here in the forum, you’re actually talking about a completely different change than the one mentioned here.
What this thread is referring to is a recent purely visual UI change in how list views are displayed, which refers back to this announcement.
What you’re referring to is an unrelated change in how sections are handled in list views, which refers back to this announcement.
The bottom line, though, is that for both of these changes, there’s no option to revert back to “the old way”.