webengineview can't work under debug build setting.

when build debug version app, the 'WebEngineView' display nothing.
(release build work as expected.)

new log:
qt.webenginecontext:

GLImplementation: desktop
Surface Type: OpenGL
Surface Profile: CompatibilityProfile
Surface Version: 4.6
Using Default SG Backend: yes
Using Software Dynamic GL: no
Using Angle: no

Init Parameters:

• application-name np100
• browser-subprocess-path D:\develop\installed\qt-6.2.0\msvc2019_64\bin\QtWebEngineProcess.exe
• create-default-gl-context
• disable-direct-composition
• disable-es3-gl-context
• disable-features MojoVideoCapture,DnsOverHttpsUpgrade,ConsolidatedMovementXY,InstalledApp,BackgroundFetch,WebOTP,WebPayments,WebUSB,PictureInPicture
• disable-speech-api
• enable-features AllowContentInitiatedDataUrlNavigations,TracingServiceInProcess
• enable-threaded-compositing
• gpu-preferences OAAAAAAAAADoAAAQAAAAAAAAAAAAAAAAAABgAAAAAAAYAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAoAAAABAAAACAAAAAAAAAAKAAAAAAAAAAwAAAAAAAAADgAAAAAAAAAEAAAAAAAAAAAAAAABQAAABAAAAAAAAAAAAAAAAYAAAAQAAAAAAAAAAEAAAAFAAAAEAAAAAAAAAABAAAABgAAAA==
• in-process-gpu
• use-gl desktop

QQmlEngine::setContextForObject(): Object already has a QQmlContext
[15188:10948:0823/142836.315:ERROR:validation_errors.cc(87)] Invalid message: VALIDATION_ERROR_UNEXPECTED_STRUCT_HEADER
[3056:2212:0823/142836.325:ERROR:validation_errors.cc(87)] Invalid message: VALIDATION_ERROR_UNEXPECTED_STRUCT_HEADER
[2021-08-23 14:28:36.356309][info][FontLogger:]createFont success
[2021-08-23 14:28:36.556348][info][FontLogger:]createFont success
[2021-08-23 14:28:36.757311][info][FontLogger:]createFont success
[1080:12660:0823/142837.174:ERROR:network_service_instance_impl.cc(286)] Network service crashed, restarting service.
[1080:12660:0823/142837.174:ERROR:network_service_instance_impl.cc(286)] Network service crashed, restarting service.
[7024:14220:0823/142837.291:ERROR:validation_errors.cc(87)] Invalid message: VALIDATION_ERROR_UNEXPECTED_STRUCT_HEADER
[1080:12660:0823/142837.407:INFO:permission_manager_qt.cpp(93)] Unexpected unsupported permission type: 29
[1080:12660:0823/142837.407:INFO:permission_manager_qt.cpp(93)] Unexpected unsupported permission type: 29
[1080:12660:0823/142837.443:ERROR:network_service_instance_impl.cc(286)] Network service crashed, restarting service.
[1080:12660:0823/142837.443:ERROR:network_service_instance_impl.cc(286)] Network service crashed, restarting service.