在使用pqytwebengine-qt5 5.15.2时，当设置系统颜色深度为16位时，webengineview无法正常工作，会显示黑屏

complete code：

import os

from PyQt5.QtCore import *
from PyQt5.QtWidgets import *
from PyQt5.QtGui import *
from PyQt5 import QtCore, QtGui, QtWidgets
from PyQt5.QtWebEngineWidgets import *
import sys

class Ui_MainWindow(QMainWindow):

    def _init_(self):

        super(Ui_MainWindow, self)._init_()
        self.setObjectName("MainWindow")
        self.resize(1386, 795)
        self.path=sys.argv[1]
        self.title=sys.argv[2]
        self.web_page=QWebEngineView()
        self.web_page.settings().setAttribute(QWebEngineSettings.WebAttribute.PluginsEnabled,True)
        self.web_page.load(QUrl(self.path))
        self.setCentralWidget(self.web_page)

       self.retranslateUi()
       QtCore.QMetaObject.connectSlotsByName(self)

    def retranslateUi(self):
        _translate = QtCore.QCoreApplication.translate
        self.setWindowTitle(_translate("MainWindow", self.title))

if _name_ == "_main_":
    app=QApplication(sys.argv)
    tree = Ui_MainWindow()
    tree.show()
    sys.exit(app.exec_())

I use a QwebEngineView (version=5.15 ) for a customer browser ，it works very good untill i change system's color depth ，from 24bit color to 16 bit color 。

next picture  is  a normal state , when  use it open a html

but change system color depth from 24 to 16 , it works error , eg : next picture .

but i'm sure ,it is working ,becasue i can see a picture tips  when i move mouse to some erea .

is the qwebengineview no support 16bit color system?  if it support 16bit color system ,what  should i do ?  

 I know it that the pyqt isn’t a Qt company product , and i just want to get some advice on how to solve this problem.