Steps to reproduce 

1. Add duplicate action to the pages app via decorations (see code snippet below) 
2. Go to a page, choose a component, duplicate it
3. Duplicated component is not visible
4. Reload page
5. Duplicated component is now visible

pages-app.yaml

Expected results

As in Magnolia 5 / with copy&paste actions, I would expect the duplicated component to be shown directly / the reload to happen automatically.

Actual results

The duplicated component ist only shown after manually reloading the page.

Workaround

Manually reload page / use copy&paste action.

Development notes