Documentation Link

https://matplotlib.org/stable/gallery/specialty_plots/leftventricle_bulleye.html

Problem

https://github.com/matplotlib/matplotlib/blob/ecf6e26f0b0241bdc80466e13ee0c13a0c12f412/examples/specialty_plots/leftventricle_bulleye.py

The Left Ventricle bullseye example has an unexpected output in which the area shaded is not aligned with the border. This is not the case in the 3.1.1 docs.

Current Doc output.

3.1.1 doc output.https://matplotlib.org/3.1.1/gallery/specialty_plots/leftventricle_bulleye.html

Suggested improvement

I managed to "fix" the sample code for my use but I feel there is a bug related to the functions used in the example. I'm not too familiar with the APIs and the data projection to polar coordinates so I feel it's better for someone more familiar to explain what happened here.

Might be related to this issue too:#16029