I have a view with nodes of type 'tasks'. I want to easily view and edit these tasks using a minimized overlay. When I click on a task title in the view, it must open in an overlay.

In Drupal 7, this was possible with the core overlay module and the Overlay Paths module. 
The core overlay has been discontinued in Drupal 8, in favor of a 'back to site' link, which does not serve my purpose of showing a minimized popup block. 
It also needs to be used by authenticated users, not only administrators.