arviz 'AxesSubplot' object has no attribute 'sharey' on Colab

Question

Does someone else experience trace on simple arviz exemple see nb on Colab Here is the snippet

import arviz as az  #0.12.1
import numpy as np

# This Plot is ok
data = {'a':np.random.normal(size=(100,)), 
        "b":np.random.normal(size=(100,)), 
         }
az.plot_pair(
    data,
    kind="kde",
    kde_kwargs={
        "hdi_probs": [0.393, 0.865, 0.989],  # Plot 1sigma, 2sigma, 3sigma HDI contours
        "contourf_kwargs": {"cmap": "Reds"},
    },
    marginal_kwargs={"color": "Black"},
    marginals=True,
    textsize=30,
);

#But here it crashes
data = {'a':np.random.normal(size=(100,)), 
        "b":np.random.normal(size=(100,)), 
        "c":np.random.normal(size=(100,)), 
         }
az.plot_pair(
    data,
    kind="kde",
    kde_kwargs={
        "hdi_probs": [0.393, 0.865, 0.989],  # Plot 1sigma, 2sigma, 3sigma HDI contours
        "contourf_kwargs": {"cmap": "Reds"},
    },
    marginal_kwargs={"color": "Black"},
    marginals=True,
    textsize=30,
);

The crash is

/usr/local/lib/python3.8/dist-packages/arviz/plots/backends/matplotlib/pairplot.py in plot_pair(ax, plotters, numvars, figsize, textsize, kind, scatter_kwargs, kde_kwargs, hexbin_kwargs, gridsize, colorbar, divergences, diverging_mask, divergences_kwargs, flat_var_names, backend_kwargs, marginal_kwargs, show, marginals, point_estimate, point_estimate_kwargs, point_estimate_marker_kwargs, reference_values, reference_values_kwargs)
    267                 for j in range(0, vars_to_plot):
    268                     for i in range(0, j):
--> 269                         ax[j, i].axes.sharey(ax[j, 0])
    270 
    271         hexbin_values = []

AttributeError: 'AxesSubplot' object has no attribute 'sharey'

If someone has a workaround that would be nice. (I have googled and not found a solution yet). Thanks