> "I have a folder open in the Dock. If I click on another folder, shouldn't that then open?" Yes, and it does.
Look at their gif carefully. Enable Dock magnification, click one folder, then click on any part of another folder's icon for which the click/cursor would no longer be on that folder's hitbox after the magnification effect moves to center that folder.
Look at their gif carefully. Enable Dock magnification, click one folder, then click on any part of another folder's icon for which the click/cursor would no longer be on that folder's hitbox after the magnification effect moves to center that folder.