`lay-label` texts not y-aligned on grouped data

[behrica]

(-> 
    (rdatasets/palmerpenguins-penguins)
    (tc/drop-columns [:rownames])
    (tc/drop-missing [:flipper-length-mm])
    (tc/group-by [:species :sex])
    (tc/aggregate (fn [ds]
                    (int
                                        (* 100.0
                                           (/
                                            (tc/row-count ds)
                                            (tc/row-count data)))))
                  {:default-column-name-prefix :%})

     (pj/pose :sex :%)     
     (pj/lay-value-bar    {:color :species})     
     (pj/lay-label    {:text :% :group :species})
     )

[behrica]

I would expet to have the text autoaligned on x and y, ex:

[behrica]

It looks like the "grouping" does not adjust the x-coordinates of the labels/text