Программа вылетает при рисовании на сцене QGraphicsView на разных вкладках

На первой вкладке при нажатии на кнопку работает, а на второй вылетает, ошибку никакую не выдаёт

from PyQt5 import QtCore, QtGui, QtWidgets
from PyQt5.Qt import *

class Ui_Dialog(object):
    def setupUi(self, Dialog):
        Dialog.setObjectName("Dialog")
        Dialog.resize(903, 702)
        self.gridLayout = QtWidgets.QGridLayout(Dialog)
        self.gridLayout.setObjectName("gridLayout")
        self.toolBox = QtWidgets.QToolBox(Dialog)
        self.toolBox.setObjectName("toolBox")
        self.page = QtWidgets.QWidget()
        self.page.setGeometry(QtCore.QRect(0, 0, 885, 630))
        self.page.setObjectName("page")
        self.pushButton = QtWidgets.QPushButton(self.page)
        self.pushButton.setGeometry(QtCore.QRect(370, 70, 75, 23))
        self.pushButton.setObjectName("pushButton")
        self.graphicsView = QtWidgets.QGraphicsView(self.page)
        self.graphicsView.setGeometry(QtCore.QRect(60, 140, 751, 381))
        self.graphicsView.setObjectName("graphicsView")
        self.toolBox.addItem(self.page, "")
        self.page_2 = QtWidgets.QWidget()
        self.page_2.setGeometry(QtCore.QRect(0, 0, 885, 630))
        self.page_2.setObjectName("page_2")
        self.graphicsView_2 = QtWidgets.QGraphicsView(self.page_2)
        self.graphicsView_2.setGeometry(QtCore.QRect(60, 200, 751, 381))
        self.graphicsView_2.setObjectName("graphicsView_2")
        self.pushButton_2 = QtWidgets.QPushButton(self.page_2)
        self.pushButton_2.setGeometry(QtCore.QRect(380, 80, 75, 23))
        self.pushButton_2.setObjectName("pushButton_2")
        self.toolBox.addItem(self.page_2, "")
        self.gridLayout.addWidget(self.toolBox, 0, 0, 1, 1)

        self.retranslateUi(Dialog)
        self.toolBox.setCurrentIndex(1)
        QtCore.QMetaObject.connectSlotsByName(Dialog)

    def retranslateUi(self, Dialog):
        _translate = QtCore.QCoreApplication.translate
        Dialog.setWindowTitle(_translate("Dialog", "Dialog"))
        self.pushButton.setText(_translate("Dialog", "PushButton"))
        self.toolBox.setItemText(self.toolBox.indexOf(self.page), _translate("Dialog", "Page 1"))
        self.pushButton_2.setText(_translate("Dialog", "PushButton"))
        self.toolBox.setItemText(self.toolBox.indexOf(self.page_2), _translate("Dialog", "Page 2"))

class Dialog(QtWidgets.QDialog, Ui_Dialog):
    def __init__(self):
        super().__init__()
        self.setupUi(self)

        self.pushButton.clicked.connect(self.draw_scene)
        self.pushButton_2.clicked.connect(self.test)

    def draw_scene(self):
        self.scene = QGraphicsScene()
        self.graphicsView.setScene(self.scene)
        self.square = QGraphicsRectItem(0, 35, 34 * 5, 200)
        self.square.setBrush(QBrush((Qt.BDiagPattern)))
        self.scene.addItem(self.square)
        self.scene.addRect(0 + 34 * 5, 35, 25 * 5, 200)
        self.scene.addRect(0 + (34 + 10) * 5, 135 - 8 * 5 // 2, (65 + 10) * 5 * (-1), 8 * 5)

    def test(self):
        self.scene2 = QGraphicsScene()
        self.graphicsView_2.setScene(self.scene2)
        self.self.square = QGraphicsRectItem(0, 35, 43 * 5, 200)
        self.square.setBrush(QBrush((Qt.BDiagPattern)))
        self.scene2.addItem(self.square)
        self.scene2.addRect(0 + 43 * 5, 35, 55 * 5, 200)

if __name__ == "__main__":
    import sys
    app = QtWidgets.QApplication(sys.argv)
    w = Dialog()
    w.show()
    sys.exit(app.exec_())