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

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.

首先，在 Firefox 上的 JupyterLab 中使用 %matplotlib widget 后端运行 issue 的最小复现。调查为什么 plt.ginput(3) 返回空数组，并且 figure 只有在 timeout 之后才出现；当鼠标点击产生预期的坐标和红色十字标记时，即表示完成。