Error in spider diagram when using percentage of the 2nd order probability

When using “percentage over 2nd order probability” as the horizontal parameter, in the spider diagram the label of the horizontal axis is “Percentage over reference value“ instead of “Percentage of the 2nd order probability“.

In addition, even though I used the default value, 80%, the values of the parameters have not been varied up to +-80% of their 2nd order probabilities.