V2 instances: search group functionality does not work

In the V2 instances the group functionality in the search does not work. It is possible to select a group, but subsequently no search suggestions are given during searching:

<img width="910" alt="Screenshot 2019-07-17 at 10 11 59" src="https://user-images.githubusercontent.com/43570914/61363150-69253280-a87b-11e9-9984-189f03c6d2bb.png">
