ipympl 0.8.2 - ginput() does not work on Jupyterlab / returns an empty array

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Assessment

Difficulty
4/5
Estimated time
3-5 days
Newbie friendliness
35/100
Issue type
Bug
Clarity
Mostly clear
Activity status
Stale
Tech stack
jupyter-notebook
Domain
frontend

Research direction

Start by running the issue's minimal reproduction with the %matplotlib widget backend in JupyterLab on Firefox. Investigate why plt.ginput(3) returns an empty array and the figure appears only after the timeout; done means mouse clicks produce the expected coordinates and red cross markers.

Written by the indexing model from the issue text.

Description

Describe the bug
I should be able to select data points from a figure and then red crosses are supposed to appear after clicking with the mouse, but nothing happens, an empty array is returned and the figures only appear after the timeout of ginput().

Expected behavior
Figure pops up and I can click with the mouse on the figure to select data points. An array will be generated

To Reproduce

%matplotlib widget 

import matplotlib.pyplot as plt
import numpy as np
t = np.arange(10)
   
plt.plot(t, np.sin(t))
     
plt.title('matplotlib.pyplot.ginput()\
 function Example', fontweight ="bold")
   
print("After 3 clicks :")
x = plt.ginput(3)
print(x)
   
plt.show()

My Platform

Firefox on Arch Linux, latest version after system update.
I tested it on Jupyterlab, I did not test it on Jupyter-notebook.

Dominant language
Jupyter Notebook
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Forks
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