Empty While Loop Bug

[ElliotRoe]

Summary
If a while(true) loop never uses any scratch functions, then the stop button won't stop it. Thus, the start button will be disabled once it is clicked

Steps to Reproduce

1. New Project
2. Add the following code:

while (True):
  if (False):
    move(1)

3. Press the green flag
4. Press the green flag again

Current Behavior
After the 2nd press, the green flag button is disabled because it is unable to stop the while loop and thus can't start again. The website needs to be reloaded to be usable again.

Expected Behavior
The while loop stops.