Qt3DViewer 0.9 crashes on B2Qt

Renesas H3 B2Qt KMS trying to run Qt3DViewer crashes on start with:

"

Only single window per screen supported!

EGL Error : Could not create the egl surface: error = 0x300b

call stack:

1  __GI_raise                              raise.c               58   0xffffb5d36d30
2  __GI_abort                              abort.c               89   0xffffb5d381c4
3  qt_message_fatal                        qlogging.cpp          1710 0xffffb609a388
4  QMessageLogger::fatal                   qlogging.cpp          816  0xffffb609a388
5  QEglFSWindow::create                    qeglfswindow.cpp      140  0xffffb345b82c
6  QEglFSIntegration::createPlatformWindow qeglfsintegration.cpp 205  0xffffb3460fd4
7  QWindowPrivate::create                  qwindow.cpp           503  0xffffb6a3d984
8  QWindow::create                         qwindow.cpp           621  0xffffb6a3dbf0
9  QWidgetPrivate::create_sys              qwidget.cpp           1477 0xffffb735da28
10 QWidget::create                         qwidget.cpp           1337 0xffffb735d230
11 QWidget::setVisible                     qwidget.cpp           8168 0xffffb7368990
12 ??                                                                 0x4165a4       

We can't have QQuickWidget if running on eglfs/KMS? Or something else?