Bug summary

The title pretty much sums it up. I have no idea if this only happens for the eqnarray environment and AnchoredText or for all Latex text and other boxes, e.g. legends, but also don't have the time to test it myself. I'll simply keep using v3.5.3, but I hope this helps other people get to the root cause.

Code for reproduction

import numpy as np
import matplotlib.pyplot as plt
import matplotlib
from matplotlib.offsetbox import AnchoredText

v = matplotlib.__version__
fig, ax = plt.subplots()
x = np.linspace(0, 2*np.pi)
y = np.sin(x)
plt.plot(x, y)

text = ('\\begin{eqnarray*}'
        f'foo \\\\'
        f'{v=} \\\\'
        '\\end{eqnarray*}')
at = AnchoredText(text, loc='upper left', prop={'usetex': True})
# at = AnchoredText(text, loc='upper left')
ax.add_artist(at)
plt.show()

Actual outcome

Expected outcome

Additional information

I should mention that when usetex is set to False, the text is displayed just fine (by text I mean the code, obviously it doesn't compile), so I can narrow it down at least that much.

Operating system

Windows 11

Matplotlib Version

3.6.0

Matplotlib Backend

QtAgg

Python version

Python 3.10.1

Jupyter version

No response

Installation

pip