How to center word document in QAxWidget on first show

Question

I have prepared this example:

import sys
from PyQt5.QtWidgets    import (QApplication, QMainWindow)
from PyQt5              import uic
from PyQt5.QAxContainer import QAxWidget



class MainForm(QMainWindow):
    def __init__(self, parent=None):
        super(MainForm, self).__init__(parent)
    
        uic.loadUi(r"scroll_bar_test.ui", self)

        self.axWidget = QAxWidget('Microsoft Web Browser')

         path = 'C:/Users/Egon/Documents/FotoViewer/scroll_bar_test.docx'
    
         self.axWidget.setControl(path)
         self.setCentralWidget(self.axWidget)
    
def main():
    app = QApplication(sys.argv)
    form = MainForm()
    form.show()
    app.exec_()

if __name__ == '__main__':
    main()

If you start the program it will show a word document but the left side is hidden:

if i use the arrow keys to the right i see the whole document:

and from there on it is centered fine. My Question is how can the word document can be shown centered right at the start?

after using QTimer.singleShot(2000, self.axWidget.updateGeometry)

Meanwhile i found out that these lines center the document:

        self.setCentralWidget(self.axWidget)
        QTimer.singleShot(5, lambda: self.axWidget.setControl(path))
        QTimer.singleShot(5, self.axWidget.updateGeometry)

The time for the Qtimer has to be the same in both shots. Both has to be done with a timer otherwise it doesnt work. Unfurtunately the user sees first a very narrow document like the last foto and then a flash and then the right presented document. Additionaly this doesnt happen on other computer. I have tryed with 3 other people and they didnt have this problmem.