Bug report

Bug summary

imshow behaviour change between matplotlib 3.1.0 and 3.1.1; y-axis is chopped-off in 3.1.1.

Code for reproduction

Run this in matplotlib 3.1.0 and 3.1.1.

importnumpyasnpimportmatplotlib.pyplotaspltxy= ["1","2"]fig,ax=plt.subplots()im=ax.imshow(np.array([[0.8,0.0], [0.1,6.3]]))ax.set_xticks(np.arange(len(xy)))ax.set_yticks(np.arange(len(xy)))ax.set_xticklabels(xy)ax.set_yticklabels(xy)plt.show()

This is a simplified version from the first figure on

• https://matplotlib.org/3.1.0/gallery/images_contours_and_fields/image_annotated_heatmap.html
• https://matplotlib.org/3.1.1/gallery/images_contours_and_fields/image_annotated_heatmap.html

where the difference can also be observed.

Actual outcome

Expected outcome

Matplotlib version

• Operating system: Linux
• Matplotlib version: v3.1.0 vs v3.1.1
• Matplotlib backend: Qt5Agg
• Python version: 3.7