Qt Linguist segmentaion fault with QWebEngineView on a form

Qt Linguist crashes if form contains QWebEngineView.

How to reproduce:

• Take attached file ru.ts (or create your own from Form ui-file with QWebEngineView on a form).
• Open it with linguist6
• Select MainWindow context

After these actions it crashes with following error messages:

Qt WebEngine seems to be initialized from a plugin. Please set Qt::AA_ShareOpenGLContexts using QCoreApplication::setAttribute and QSGRendererInterface::OpenGLRhi using QQuickWindow::setGraphicsApi before constructing QGuiApplication.
WebEngineContext used before QtWebEngineCore::initialize() or OpenGL context creation failed.
Segmentation fault (core dumped)

Source files are attached.