[Bug]: mplstyle figure.dpi is ignored in first plot

[grinsted]

Bug summary

When you load a stylesheet with a figure.dpi setting, then the dpi setting is not honored in the first figure. (It is honored in subsequent figures).

Code for reproduction

import numpy as np
import matplotlib as mpl
import matplotlib.pyplot as plt
from pathlib import Path
cfgdir = mpl.get_configdir()

# --- First create a custom style file with just a dpi setting ---
p = Path(cfgdir)
stylelib = (p / 'stylelib')
stylelib.mkdir(exist_ok=True)
path = stylelib / 'mplbug.mplstyle'
path.write_text("figure.dpi: 200")

plt.style.reload_library()

x = np.cos(np.linspace(0,4*np.pi,200))
plt.style.use('mplbug')
plt.plot(x)

Actual outcome

when i run this exact code two times in a row in a jupyter notebook, then the figure size is not the same the two times. It is wrong in the first figure.

Expected outcome

I expect the figure to be big the first time and all subsequent times.

Additional information

No response

Operating system

Windows

Matplotlib Version

3.5.2

Matplotlib Backend

module://ipykernel.pylab.backend_inline

Python version

3.8.5

Jupyter version

6.1.4

Installation

conda

[QuLogic]

This is a duplicate of #23007, and I believe you would need to update matplotlib-inline to fix it.