Bug summary

This bug occurs when I create a subplot with twin axes. Setting the aspect of axes from 'auto' to 'equal' works fine, but resetting the aspect back to 'auto' does not work.

Code for reproduction

import matplotlib.pyplot as plt

fig = plt.figure()
ax = fig.add_subplot()
ax_twin = ax.twinx() # No bug if I remove this
ax.plot([0, 1, 2], [0, 2, 1])

ax.set_aspect('auto')
plt.savefig('plot1.png')
ax.set_aspect('equal')
plt.savefig('tmp.png') # No bug if I remove this
ax.set_aspect('auto')
plt.savefig('plot2.png') # plot2.png should be the same as plot1.png

Actual outcome

plot1.png

plot2.png

Expected outcome

plot2.png should be the same as plot1.png

Additional information

No response

Operating system

No response

Matplotlib Version

3.10.8

Matplotlib Backend

No response

Python version

No response

Jupyter version

No response

Installation

None