After upgrading to 3.0 I’m getting myself familiar with the new UI. In 2.x I used paperUI/Control as overview page, not sure if the new Overview page it supposed to replace this?
The problem I have is that the page is empty. When I edit the page and go to “Design”, I get a popup with this error message: “TypeError: Cannot read property ‘indexOf’ of null”
Source looks like this:
config: label: Overview blocks:  masonry: null
Any hints how I can fix this?