When using the double barrel shotgun, I've noticed that it doesn't always reload automatically. Sometimes after firing the second shell, the sole survivor doesn't load new shells and just sits there with an empty gun. Other times the gun does reload automatically after both shells have been fired. It seems random to me.

Has anyone else seen this? Is there a reason? I wouldn't care if it was consistent in reloading manually/automatically, but you never know what it's going to do.