How to change interactor of QQuickVTKRenderWindow?

Support
#1

Hi, I’m new to the forum. I’m currently working on a project with Qt 5.12 and VTK 9.1 in which I want to use a custom interactorStyle. In my qml I have

  VTKRenderWindow {
    id: vtkwindow
    width: 400
    height: 400
  }
 
  ModelViewer {
    objectName: "ModelViewer"
    anchors.fill: vtkwindow
    renderWindow: vtkwindow
  }

ModelViewer is my custom class which inherits from QQuickVTKRenderItem. From within ModelViewer I try to change the interactorStyle like this:

vtkNew<vtkInteractorStyleFlight> style;
renderWindow()->renderWindow()->GetInteractor()->SetInteractorStyle(style);

When I move within the scene I get an error message after a short time

QObject: Cannot create children for a parent that is in a different thread.
(Parent is QVTKInteractorInternal(0x55f0a93f3e20), parent's thread is QThread(0x55f0a90e7ce0), current thread is QSGRenderThread(0x55f0a97e3d50)

then the program segfaults. I also printed out the current thread when I set the new style and it is not QSGRenderThread. Setting QSG_RENDER_LOOP=basic makes the application run without any errors.
Unfortunately I could not find any examples on how to change the interactor in a Qt setting so thank you in advance for any help.