This reminds me of a separate issue, which I will write here before I forget. It should be a separate question, but I haven't looked to see if it still occurs on v13. Graph Builder with a scatterplot (Y continuous, X ordinal or nominal)., points jittered. Superimpose a box plot. The outliers associated with a box plot recieve jitter values different to the underlying data. The result is that a single data value is drawn twice (same Y value but different X values). The workaround is to de-select the litter checkbox, but it really can act as a source of confusion. Like I said, not checked it on v13 yet.
-Dave