title: Kivy drag n drop area is too big
body: <p>Reposting this with example code from geeksforgeeks.
  I am testing a simple drag and drop function in Kivy with the Drag Behavior module:</p>
  <p><a href="https://kivy.org/doc/stable/api-kivy.uix.behaviors.drag.html" rel="nofollow noreferrer">https://kivy.org/doc/stable/api-kivy.uix.behaviors.drag.html</a></p>
  <p>However, I can't seem to work out how to make the draggable area small. I've tried playing around with the numbers on the drag_rectangle parameters, but the draggable area either doesn't get smaller or just completely disappears for some reason (meaning I can't drag the square). For reference, this is the issue:</p>
  <p><a href="https://i.stack.imgur.com/UqaZg.gif" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/UqaZg.gif" alt="enter image description here" /></a></p>
  <p>If you run the code in this geeksforgeeks sample the same problem happens so I think it has to something to do with the module itself:
  <a href="https://www.geeksforgeeks.org/how-to-add-drag-behavior-in-kivy-widget/" rel="nofollow noreferrer">https://www.geeksforgeeks.org/how-to-add-drag-behavior-in-kivy-widget/</a></p>