- Windows 10 Pro, VS 2022 17.12.3. - Qt 6.8.0 and Qt 6.8.1. - VTK 9.4 download from vtk.org and vtk_master from git. - VTK build: all default values in CMake except `-DCMAKE_BUILD_TYPE=Release -DBUILD_SHARED_LIBS=OFF -DVTK_MODULE_ENABLE_VTK_GUISupportQt=WANT`. The example MinimalQtVTKApp that comes with VTK builds with no errors. But no widow appears when running the executable. If comment out QVTKOpenGLNativeWidget related stuff, window appears but it is essentially a Qt-only window. The same example code works perfectly fine on VTK 9.3.1 build.