What is not clear to me what leads to a second DELETE request if the instance is already in DELETING state? Is the instance stuck in DELETING state? If yes, then I think we should fix that bug. If no, then I guess instance will eventually be deleted and no need for the second DELETE request.
I put this bug to incomplete but feel free to but back in New when you provide the answer of the above question.
What is not clear to me what leads to a second DELETE request if the instance is already in DELETING state? Is the instance stuck in DELETING state? If yes, then I think we should fix that bug. If no, then I guess instance will eventually be deleted and no need for the second DELETE request.
I put this bug to incomplete but feel free to but back in New when you provide the answer of the above question.