Bug summary

For example, when subplot A shares the x-axis with subplot B (A is created with sharex=B), a call toB.cla() will set the xlimit to [0, 1], which may not be expected (in contrast, a call toA.cla() will not change the xlimit).

I think the main problem comes from the following function, where it will check whether its_sharex attribute isNone; however, in this case, B is shared to A, but no axis is shared to B, so B's_sharex attribute isNone.

Code for reproduction

ax=plt.subplot(211)ax2=plt.subplot(212,sharex=ax)ax.plot(range(50))ax2.plot(range(50))ax.cla()plt.show()

Actual outcome

Expected outcome

Additional information

No response

Operating system

No response

Matplotlib Version

3.8.3

Matplotlib Backend

'TkAgg'

Python version

3.9.13

Jupyter version

No response

Installation

pip