Why is it that once the point_color_option is set, the point cloud cannot be displayed anymore?

[YiQiuZHAO]

Checklist

• I have searched for similar issues.
• For Python issues, I have tested with the latest development wheel.
• I have checked the release documentation and the latest documentation (for main branch).

My Question

I tried to set the 'point_color_option', but then the rendering window couldn't display the point cloud. Even when I reverted it to the default setting, it remained a blank area.
But strangely enough, the same code works properly in another program.

Specifically, I embedded the point cloud window into the pyside6 window.
The code is written using PyCharm.
The implementation method is as follows:

[YiQiuZHAO]

import numpy as np
import win32gui
from PySide6.QtCore import QTimer
from PySide6.QtGui import QWindow
from PySide6.QtWidgets import QMainWindow, QWidget, QVBoxLayout, QApplication
from untitled import Ui_MainWindow
import open3d as o3d
from open3d.visualization import gui


class Open3DWidget(QWidget):
    def __init__(self):
        super().__init__()
        self.layout = QVBoxLayout(self)
        self.o3d_window = gui.Application.instance.create_window("Open3D", 800, 600)
        self.layout.addWidget(self.o3d_window.native)


class interface(QMainWindow, Ui_MainWindow):
    def __init__(self):
        super().__init__()
        self.setupUi(self)

        self.o3d_window = o3d.visualization.Visualizer()
        self.o3d_window.create_window(visible = False)
        self.o3d_window_pid = win32gui.FindWindow('GLFW30',None)
        self.o3d_sub_window = QWindow.fromWinId(self.o3d_window_pid)
        self.o3d_window_player = QWidget.createWindowContainer(self.o3d_sub_window)
        self.gridLayout.addWidget(self.o3d_window_player)

        points = np.random.randint(0,1024,size=(1000,3))

        pcd = o3d.geometry.PointCloud()
        pcd.points = o3d.utility.Vector3dVector(points)

        self.o3d_window.add_geometry(pcd)
        self.o3d_window.update_geometry(pcd)

        print(self.o3d_window.get_render_option().point_color_option)

        self.timer = QTimer()
        self.timer.timeout.connect(self.update_3d)
        self.timer.start(20)

    def update_3d(self):
        self.o3d_window.poll_events()
        self.o3d_window.update_renderer()

app = QApplication([])
win = interface()
win.show()
app.exec()

# -*- coding: utf-8 -*-

################################################################################
## Form generated from reading UI file 'untitled.ui'
##
## Created by: Qt User Interface Compiler version 6.8.2
##
## WARNING! All changes made in this file will be lost when recompiling UI file!
################################################################################

from PySide6.QtCore import (QCoreApplication, QDate, QDateTime, QLocale,
    QMetaObject, QObject, QPoint, QRect,
    QSize, QTime, QUrl, Qt)
from PySide6.QtGui import (QBrush, QColor, QConicalGradient, QCursor,
    QFont, QFontDatabase, QGradient, QIcon,
    QImage, QKeySequence, QLinearGradient, QPainter,
    QPalette, QPixmap, QRadialGradient, QTransform)
from PySide6.QtWidgets import (QApplication, QGridLayout, QMainWindow, QSizePolicy,
    QWidget)

class Ui_MainWindow(object):
    def setupUi(self, MainWindow):
        if not MainWindow.objectName():
            MainWindow.setObjectName(u"MainWindow")
        MainWindow.resize(827, 784)
        self.centralwidget = QWidget(MainWindow)
        self.centralwidget.setObjectName(u"centralwidget")
        self.widget = QWidget(self.centralwidget)
        self.widget.setObjectName(u"widget")
        self.widget.setGeometry(QRect(9, 9, 791, 741))
        self.gridLayout = QGridLayout(self.widget)
        self.gridLayout.setObjectName(u"gridLayout")
        self.gridLayout.setContentsMargins(0, 0, 0, 0)
        MainWindow.setCentralWidget(self.centralwidget)

        self.retranslateUi(MainWindow)

        QMetaObject.connectSlotsByName(MainWindow)
    # setupUi

    def retranslateUi(self, MainWindow):
        MainWindow.setWindowTitle(QCoreApplication.translate("MainWindow", u"MainWindow", None))
    # retranslateUi