Introducing a new selection setting. To turn it on go to the menu in the top left corner, navigate over to ‘Preferences‘ select ‘Use Direct Select’.
When ‘Use Direct Select’ is on, you will always select the deepest child element on first click, to move up one element hit the esc key. Additionally you can use CMD + Click, or CTRL + Click on Windows, to select the parent element of the element you have selected.
When ‘Direct Select’ is toggled off, your first selection will be top level and you can select deeper elements by double clicking. In addition, you can use CMD + Click to select the deepest nested element.