all jtplot styles do not visualize outliers in boxplots

[velikod]

Dear community,

I am trying to make a matplotlib boxplots and there are issues mostly with the visualization of outliers with all jtplot styles - they are not visible.

import pandas as pd
import numpy as np
from jupyterthemes import jtplot
jtplot.style('chesterish')

np.random.seed(1)
df = pd.DataFrame(np.random.randn(1000, 2),
                  columns=['Col1', 'Col2'])
df['X'] = pd.Series(['A', 'A', 'A', 'A', 'A',
                     'B', 'B', 'B', 'B', 'B'])
boxplot = df.boxplot(by='X')

After resetting the plot looks like this:

Notice the outliers on the right plot!