matplotlib window hang

Description

What steps will reproduce the problem?

I’m using as graphical backend the qt5 options. When I am ploting something for example

import matplotlib.pyplot as plt plt.plot([1,2,3,4,5,6,7])

and open then the preference menu to adjust the plot, then the figure hang and I can only close it with plt.close(‘all’) at the console.

If I do the same at a python console without spyder I can not reproduce the problem, so I think the problems has something to do with spyder.

Versions

• Spyder version: 5.2.2
• Python version: 3.7.3
• Qt version: 5.12.10
• PyQt5 version: 5.12.3
• Operating System: Linux 4.19.0-19-amd64

Dependencies

# Mandatory:
atomicwrites >=1.2.0          :  1.4.0 (OK)
chardet >=2.0.0               :  4.0.0 (OK)
cloudpickle >=0.5.0           :  1.6.0 (OK)
cookiecutter >=1.6.0          :  1.7.2 (OK)
diff_match_patch >=20181111   :  20200713 (OK)
intervaltree >=3.0.2          :  3.1.0 (OK)
IPython >=7.6.0;<8.0.0        :  7.29.0 (OK)
jedi >=0.17.2;<0.19.0         :  0.17.2 (OK)
jellyfish >=0.7               :  0.8.9 (OK)
jsonschema >=3.2.0            :  3.2.0 (OK)
keyring >=17.0.0              :  23.0.1 (OK)
nbconvert >=4.0               :  6.0.7 (OK)
numpydoc >=0.6.0              :  1.1.0 (OK)
parso >=0.7.0;<0.9.0          :  0.7.0 (OK)
pexpect >=4.4.0               :  4.8.0 (OK)
pickleshare >=0.4             :  0.7.5 (OK)
psutil >=5.3                  :  5.8.0 (OK)
pygments >=2.0                :  2.8.1 (OK)
pylint >=2.5.0                :  2.7.4 (OK)
pyls_spyder >=0.4.0           :  0.4.0 (OK)
pylsp >=1.3.2;<1.4.0          :  1.3.3 (OK)
pylsp_black >=1.0.0           :  1.0.0 (OK)
qdarkstyle =3.0.2             :  3.0.2 (OK)
qstylizer >=0.1.10            :  0.1.10 (OK)
qtawesome >=1.0.2             :  1.0.2 (OK)
qtconsole >=5.2.1;<5.3.0      :  5.2.1 (OK)
qtpy >=1.5.0                  :  1.9.0 (OK)
rtree >=0.9.7                 :  0.9.7 (OK)
setuptools >=49.6.0           :  56.0.0 (OK)
sphinx >=0.6.6                :  3.5.4 (OK)
spyder_kernels >=2.2.1;<2.3.0 :  2.2.1 (OK)
textdistance >=4.2.0          :  4.2.1 (OK)
three_merge >=0.1.1           :  0.1.1 (OK)
watchdog >=0.10.3             :  1.0.2 (OK)
xdg >=0.26                    :  0.27 (OK)
zmq >=17                      :  22.3.0 (OK)

# Optional:
cython >=0.21                 :  0.29.23 (OK)
matplotlib >=2.0.0            :  3.5.1 (OK)
numpy >=1.7                   :  1.21.3 (OK)
pandas >=1.1.1                :  1.2.3 (OK)
scipy >=0.17.0                :  1.7.1 (OK)
sympy >=0.7.3                 :  1.9 (OK)

[rhkarls]

Is it the same issue as described here https://github.com/spyder-ide/spyder/issues/16946 ? If so it appears to be a matplotlib issue, and a fix is merged for next release of matplotlib 3.5.2 (see https://github.com/matplotlib/matplotlib/pull/22202). Might also work to downgrade matplotlib to 3.4

[ccordoba12]

Thanks @rhkarls for the clarification!

@mhofsaess, my bad, sorry. I messed up the Matplotlib versions.