I might be misunderstanding you, but dragging down from the top bar in GNOME while a window is maximized results in the same behaviour as grabbing the window's toolbar. So you can still move the window around when dragging down from the top bar. This has been the default behaviour for a long time (maybe since GNOME 3? unsure)
you are viewing a single comment's thread
view the rest of the comments
view the rest of the comments