For the bug report, I was looking for a bug report specific to QVTKRenderWindowInteractor, since it’s part of the VTK repository. I can take some of my time (probably this weekend) to run the QVTKRenderWindowInteractor to see if I can reproduce (and hopefully fix) the GLEW error that you saw there.
For qml-vtk-python, all I can offer is advice here in discourse, since qml-vtk-python isn’t part of VTK.