[Bug]: The default Pyplot buttons are unresponsive with Python 3.9.9. #21736
Description
Bug summary
See https://stackoverflow.com/questions/70072297/pyplot-buttons-do-not-work-reliably-on-windows-10.
I have only tried Python 3.7 as installed in Visual Studio 2019 (where the buttons are ok) and Python 3.9.9, which I installed myself from python.org, (where they do not). I am using Matplotlib 3.5.0 with Python 3.9.9, and have tested 3.3.4 and 3.4.3. I am using 3.3.4 with Python 3.7.
I admit it seems strange that no one else has reported this as far as I can tell.
This is on Windows 10.
Code for reproduction
from math import radians, degrees
import numpy as np
import matplotlib.pyplot as plt
def main():
x = np.arange(0, radians(1800), radians(12))
theta = np.arange(0, 1800, 12)
plt.plot(theta, np.cos(x), 'b')
plt.title("Plot of cos(x)")
plt.ylabel("cos(x)")
plt.xlabel("x, degrees")
plt.xticks(np.arange(0, 1801, 180))
plt.grid(True)
plt.show()
main()Actual outcome
Buttons usually do not respond (don't show they are pressed and don't do anything). Occasionally they do. Home can typically be depressed but almost never restores the plot.
Expected outcome
Buttons respond (show they are pressed) and do what they should.
Additional information
Works in 3.7.
Operating system
Windows 10
Matplotlib Version
3.5.0, 3.3.4, 3.4.3
Matplotlib Backend
No response
Python version
3.9.9
Jupyter version
No response
Installation
pip