Coroutines: Halting#

Coroutines are executing from the MonoBehaviour that started them.
They are not running on the object where the method is, unless that object also ran the associated StartCoroutine call.
Coroutines can be stopped with the StopCoroutine method, or StopAllCoroutines.
Coroutines are also stopped when the MonoBehaviour is destroyed or if the GameObject the MonoBehaviour is attached to is deactivated.
Coroutines are not stopped when a MonoBehaviour is disabled.

Resolution#

Ensure you are not:

• Calling StopAllCoroutines on the MonoBehaviour running your coroutine.
• Destroying the MonoBehaviour running the coroutine, including the GameObject that contains it.
  This includes changing scenes and destroying the objects that way.
• Disabling the GameObject containing the MonoBehaviour running the coroutine.
• Using StopCoroutine to halt the execution.
• Throwing any exception inside the coroutine.
  Exceptions will halt the execution of any method, and unless caught will entirely halt a coroutine.

The coroutine still stops before completion.