On the Project screen try this:
Open a project that has a lot of tracks in it.
Goto the Visibility Tab and scroll down to a track that is not currently visible.
Toggle the track on or off. As soon as you do that, the vertical scroll bar moves upwards causing the track you have just changed to be no longer visible, so if you want to the toggle visibility of several tracks at the bottom of the list it is necessary to scroll back down after selecting each one. On the MixConsole Visibility Tab the scroll bar stays where you put it, which is as it should be so that the visibility of several tracks can be set without having to scroll back down again after setting each one.