Whether this change is positive or negative is still,in fact , under debate.
It is good to know that you are referencing the discussion options in your presentation. However, the requirement is for you to have a clear opinion. So, do you believe that this is a positive or negative matter? Without that clear reference to your point of view, the examiner will judge this paragraph as not having a proper writer's opinion. He will fail your score in that task aspect. Next time, answer the question directly. Offer a clear opinion, it is something you will benefit from in terms of scoring considerations.
the problem appears to ensue
This is not a discussion requirement. You should be focusing on the positive or negative aspect of the discussion. You are not being asked about the causes of the problem. You are being asked to discuss the positive or negative aspect of the discussion. You have not met the discussion parameters for a passing score.