Issue:
Clicking on the Preload widget that appears on top of the Quick Menu while still downloading the World makes it disappear, it still downloads the World in the background though.
Reproduction Steps:
  1. Start Preloading a World in the Main Menu
  2. Close the Main Menu and open the Quick Menu
  3. Click somewhere on the Preload widget that isn't the cancel button
  4. Now close the Main Menu and open the Quick Menu again
If you do this, you will notice that the Preload widget is now gone,
Expected Behavior:
The Preload widget should only disappear when clicking on it if the World already finished downloading and not while it's still downloading.
Attachments:
Here is a video showcasing the issue: