title: turtle screen crashes when I run the code
body: <p>I'm trying to create the Pong game, and for now I just want to draw the paddles. </p>
  
  <pre><code>import turtle
  
  wn = turtle.Screen()
  wn.title("Pong by @Edgedancer3791")
  wn.bgcolor("black")
  wn.setup(width=800, height=600)
  wn.tracer(0)
  
  # Paddle A
  paddle_A = turtle.Turtle()
  paddle_A.speed(0)
  paddle_A.shape("square")
  paddle_A.color("white")
  paddle_A.shapesize(stretch_wid=5, stretch_len=1)
  paddle_A.penup()
  paddle_A.goto(-350, 0)
  
  # Paddle B
  paddle_B = turtle.Turtle()
  paddle_B.speed(0)
  paddle_B.shape("square")
  paddle_B.color("white")
  paddle_B.shapesize(stretch_wid=5, stretch_len=1)
  paddle_B.penup()
  paddle_B.goto(350, 0)
  </code></pre>
  
  <p>It instantly crashes, without showing the paddles or anything. I also don't get any error message. I really don't know what to do.
  I've made a bit of research and found that with turtle.done() it doesn't crash, but it still doesn't draw anything on the screen. </p>