title: python ursina engine does not render the window
body: <p>Here is the code that I wrote.</p>
  <pre><code>from ursina import *
  from ursina.prefabs.first_person_controller import FirstPersonController
  
  app = Ursina()
  
  player = FirstPersonController()
  
  app.run()
  </code></pre>
  <p>It is not a lot, but for some reason the window does not show up properly:
  <a href="https://i.stack.imgur.com/lGg0C.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/lGg0C.png" alt="enter image description here" /></a></p>
  <p>EDIT:<br />
  I use python -v 3.10 and ursina -v 4.1.1
  My operating system is windows 10</p>
  <p>EDIT 2:<br />
  It doesn't work on python -v 3.7 either</p>