[Vue warn]: Extraneous non-props attributes when testing router-view

[raphaelschwinger]

We are trying to test one of our views. This view is displaying two components and a router-view.
In the router-view two "child" views get rendered and props and event listeners should be attached.
The structure of our "parent" view is like this:

<ControlsA />
<router-view
:propA
:propB
@eventlistener
/>
<ControlsB />

We followed the guide here

Subject of the issue

When testing the "parent" view we get the following error:

[Vue warn]: Extraneous non-props attributes (propA, propB) ...