Annotations on heatmaps not shown for all values

[ellie-okay]

Example:
https://www.tutorialspoint.com/how-to-annotate-each-cell-of-a-heatmap-in-seaborn

import seaborn as sns
import pandas as pd
import numpy as np
import matplotlib.pyplot as plt
plt.rcParams["figure.figsize"] = [7.50, 3.50]
plt.rcParams["figure.autolayout"] = True
df = pd.DataFrame(np.random.random((5, 5)), columns=["a", "b", "c", "d", "e"])
sns.heatmap(df, annot=True, annot_kws={"size": 7})
plt.show()

My result on both my laptop and my desktop using VSCode and/or PyCharm Pro:

Similarly, the project I was working on had results like this:

pip list
Package         Version
--------------- ------------
contourpy       1.1.1
cycler          0.11.0
fonttools       4.42.1
kiwisolver      1.4.5
matplotlib      3.8.0
numpy           1.26.0
packaging       23.1
pandas          2.1.0
Pillow          10.0.1
pip             23.2.1
pyparsing       3.1.1
python-dateutil 2.8.2
pytz            2023.3.post1
seaborn         0.12.2
setuptools      65.5.0
six             1.16.0
tzdata          2023

[ellie-okay]

I've just downgraded matplotlib to 3.7.3 and it works now.

[mwaskom]

Duplicate of #3478