Unsolved Update a QDockWidget's subwidgets which already happens naturally upon hovering over with mouse

[enjoysmath]

I have a QDockWidget in a QMainWindow, the QDockWidget contains a stack of QUndoViews containing commands that I want to change the text of in the QUndoView. You accomplish this by doing command.setText(). However, the QUndoView is only showing the updated text when I hover over it with the mouse. Not even will calling the below right after setText work:

    self.editor().undoView().setFocus()
    self.editor().undoView().update()
    self.editor().undoView().hide()
    self.editor().undoView().show()

Here is the minimal code to demonstrate the problem:

from PyQt5.QtWidgets import (QMainWindow, QDockWidget, QPushButton, QLabel, \
                             QStackedWidget, QUndoStack, QUndoCommand, QApplication, \
                             QUndoView)
import sys
from PyQt5.QtCore import QObject, pyqtSignal, Qt

class Command(QUndoCommand):
    def __init__(self):
        super().__init__()
        
    def undo(self):
        print("Command Undone")
    
    def redo(self):
        print("Command Redone")


class CommandTimeline(QDockWidget):
    def __init__(self):
        super().__init__()
        self.stackedWidget = QStackedWidget()
        self.setWidget(self.stackedWidget)
        
    def addUndoView(self, stack):
        view = QUndoView(stack)
        self.stackedWidget.addWidget(view)
        return view
    
    
class Obj(QObject):
    nameChanged = pyqtSignal(str)
    
    def __init__(self, name):
        super().__init__()
        self._name = name
    
    def setName(self, name):
        self._name = name
        self.nameChanged.emit(name)
        
    def __str__(self):
        return self._name
    
    
class MainWindow(QMainWindow):
    def __init__(self):
        super().__init__()
        self.undoStack = QUndoStack()
        self.commandTimeline = CommandTimeline()
        self.commandTimeline.addUndoView(self.undoStack)
        self.addDockWidget(Qt.LeftDockWidgetArea, self.commandTimeline)
        button = QPushButton("Click")
        self.setCentralWidget(button)
        button.clicked.connect(self.changeObjName)
        self.obj = Obj("A")
        self.addCommand()
        
    def addCommand(self):
        def getText(obj):
            return "The command text: " + str(obj)
        command = Command()
        command.setText(getText(self.obj))
        self.obj.nameChanged.connect(lambda name: command.setText(getText(self.obj)))
        self.undoStack.push(command)
        
    def changeObjName(self):
        self.obj.setName("B")
                
        
if __name__ == "__main__":
    app = QApplication([])
    
    window = MainWindow()
    window.show()
    
    sys.exit(app.exec_())

Run this code and notice that after clicking the button, the text in the undoview doesn't change, but after hovering over the dockwidget, the text updates immediately.

How can I trigger the update upon command.setText()?