Interactive plot windows freeze

Hi,

when a matplotlib plot window opens (using the Gt5 backend), the plot window freezes after my first interaction with it. For example, I click on “save”, the save-file-manager opens, but then it instantly closes again and the plot window is frozen.

It does not happen when I run the script in a normal terminal. There, the interactive plot window works just fine, so I figured it must be Spyder related.

Spyder 5.2.2 Python 3.7.15 64-bit IPython 7.31.1 Qt 5.15.2 PyQt5 5.15.7 Linux 5.4.0-131-generic Matplotlib 3.5.3

System: Ubuntu 18.04.5

What steps reproduce the problem?

Open Spyder, run

import matplotlib.pyplot as plt

fig, axs = plt.subplots()

Paste Traceback/Error Below (if applicable)

No error message.

Dependencies

# Mandatory:
atomicwrites >=1.2.0          :  1.4.0 (OK)
chardet >=2.0.0               :  4.0.0 (OK)
cloudpickle >=0.5.0           :  2.0.0 (OK)
cookiecutter >=1.6.0          :  1.7.3 (OK)
diff_match_patch >=20181111   :  20200713 (OK)
intervaltree >=3.0.2          :  3.1.0 (OK)
IPython >=7.6.0;<8.0.0        :  7.31.1 (OK)
jedi >=0.17.2;<0.19.0         :  0.18.1 (OK)
jellyfish >=0.7               :  0.9.0 (OK)
jsonschema >=3.2.0            :  4.16.0 (OK)
keyring >=17.0.0              :  23.4.0 (OK)
nbconvert >=4.0               :  6.4.4 (OK)
numpydoc >=0.6.0              :  1.5.0 (OK)
parso >=0.7.0;<0.9.0          :  0.8.3 (OK)
pexpect >=4.4.0               :  4.8.0 (OK)
pickleshare >=0.4             :  0.7.5 (OK)
psutil >=5.3                  :  5.9.0 (OK)
pygments >=2.0                :  2.11.2 (OK)
pylint >=2.5.0                :  2.14.5 (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             :  1.0.3 (OK)
qtconsole >=5.2.1;<5.3.0      :  5.2.2 (OK)
qtpy >=1.5.0                  :  2.2.0 (OK)
rtree >=0.9.7                 :  0.9.7 (OK)
setuptools >=49.6.0           :  65.5.0 (OK)
sphinx >=0.6.6                :  5.0.2 (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             :  2.1.6 (OK)
xdg >=0.26                    :  0.27 (OK)
zmq >=17                      :  23.2.0 (OK)

# Optional:
cython >=0.21                 :  None (NOK)
matplotlib >=2.0.0            :  3.5.3 (OK)
numpy >=1.7                   :  1.21.5 (OK)
pandas >=1.1.1                :  1.3.5 (OK)
scipy >=0.17.0                :  1.7.3 (OK)
sympy >=0.7.3                 :  None (NOK)

[SchroedingersLion]

Thank you for the new info @ReneLoh ! I would suggest for testing proposes to create a new conda environment with packages from the conda-forge channel (so you can try the latest Spyder version). For that you can do something like the following from a terminal (the env will need to be created with at least Python 3.8):

conda create -n spyder-cf -c conda-forge python=3.8 spyder=5.4.0 matplotlib
conda activate spyder-cf
spyder

Let us know if the issue persists using the latest Spyder release

@dalthviz Thank you, @dalthviz! Executing the recommended commands and launching Spyder 5.4.0 in the new environment fixed the issue! The interactive plot windows works as it should.

So, would you recommend me to do all Spyder-work in this new environment and load all packages from conda-forge?

[SchroedingersLion]

Thank you for the help and the tips!!