Bug summary

I expected tick_top to add ticks on the top of the uppermost subplot when using sharex=True. However, it adds ticks to the lower subplot (as it would normally), making it incompatible with shared axes.

Code for reproduction

import matplotlib.pyplot as plt

fig, axes = plt.subplots(
    sharex=True, sharey=True, 
    ncols=2, nrows=2
)
axes = axes.flatten()
for ax in axes:
    sc = ax.scatter(
        x=[0, 1, 5, 3], 
        y=[0, 1, 2, 4], 
    )

    ax.xaxis.tick_top()
    ax.tick_params(axis='x', rotation=55)

Actual outcome

Expected outcome

Additional information

No response

Operating system

Ubuntu

Matplotlib Version

3.8.2

Matplotlib Backend

No response

Python version

No response

Jupyter version

No response

Installation

conda