Bug summary

Compare Issue #15491.
The pgf backend fails to render hatching properly (sometimes absent, sometimes partial) when the axes limits are set. Exact conditions depend on dataset and limits chosen. Hatching is rendered correctly in QtAgg backend.

Code for reproduction

import numpy as np
import matplotlib as mpl
mpl.use('pgf')
import matplotlib.pyplot as plt

x = y = np.arange(10)

plt.plot(x,y)
plt.fill_between(x,y,
                facecolor="none", hatch="X",
                linewidth=0)

plt.xlim(0,8)

plt.savefig('testPlot.png')

Actual outcome

Expected outcome

Additional information

In the test case, when no limit is set, hatch is rendered correctly.

When limits are set, the following work as expected:
plt.xlim(0,9) ... plt.xlim(8,9)

But these limit cause hatch to be unrendered
plt.xlim(0,1) ... plt.xlim(0,8)

the exact parameters likely depend on data being plotted. On a live dataset that I was using, the hatch was partially rendered in some of the expected area but cut off elsewhere (not at the limits set)

Operating system

WSL2

Matplotlib Version

3.8.4

Matplotlib Backend

pgf

Python version

3.12.2

Jupyter version

No response

Installation

conda