Bug summary

When using a polar coordinate system the plot title overlaps with the axis labels. This worked in 3.9.4 and broke with 3.10.0. This commit broke it: 8abe308 via #28300

Code for reproduction

import matplotlib.pyplot as plt

plt.polar([0, 1], [0, 1])
plt.title('My Title')
plt.savefig('output.png')

Actual outcome

The title overlaps the axis labels

Expected outcome

The title should be above the axis labels

Additional information

• This bug happens with the new 3.10 version, but with the 3.9.4 version
  I performed a git bisect using this:

 git bisect start

git bisect good v3.9.4

git bisect bad HEAD

a small test script check.py - there's probably a better way, but that's what I came up with. (Note that the issues also comes up when not using `bbox_inches='tight', but this way it was easier to bisect, since I could instrument the image size)

import matplotlib.pyplot as plt
from PIL import Image

def main():
    plt.polar([0, 1], [0, 1])
    plt.title('My Title')
    plt.savefig('output.png', bbox_inches='tight')
    with Image.open('output.png') as img:
        size = img.size

    if size != (453, 464):
        return 1
    else:
        return 0

if __name__ == '__main__':
    raise SystemExit(main())

finally,

git bisect run python3 check.py

After a few steps it yielded this suspicious commit: 8abe308 (cc @rcomer) which was merged in #28300

Operating system

Ubuntu 22.04

Matplotlib Version

3.10.0.dev1180+gc2d502d219

Matplotlib Backend

agg

Python version

3.13.1

Jupyter version

No response

Installation

git checkout