Segmentation fault while using matplotlib under Linux

[d-sacre]

For a data evaluation software, I need among others the matplotlib module. The necessary installation was done according to the information in the READ.ME. After successful installation, running the project in Godot lead to numerous indescriptive error messages. Running a test Python script containing a matplotlib example in a terminal with the following command

PATH/TO/PROJECT/addons/pythonscript/x11-64/bin/python3.8 /PATH/TO/FILE.py

led to the error message

Xlib: request 55 length 16 would exceed buffer size. Segmentation fault (core dumped)

Changing plt.show() to plt.savefig(FILENAME) did not change the result.

The error seems to be related to an issue with different xlib being present on the system (system specific and the ones shipped with the PythonScript addon).

Information for Reproduction

Prerequisites

• Host System: Manjaro 22
• Platform: x11-64
• Kernel: 5.10.161-1-MANJARO
• Desktop Environment: Xfce 4.18
• Godot v3.5.1.stable.arch_linux, directly installed from Manjaro's Official Repositories
• PythonScript Addon v0.50.0, installed directly from Godot's AssetLib
• matplotlib installed via pip (numpy and scipy not strictly required, only needed for comparability)
• Matplotlib Bar Graph example: https://matplotlib.org/stable/gallery/lines_bars_and_markers/bar_colors.html#sphx-glr-gallery-lines-bars-and-markers-bar-colors-py

Commands used for Python Module Installation (Step-by-Step)

1. Navigate to correct folder cd PATH/TO/PROJECT/addons/pythonscript/x11-64/bin/
2. Make Python executable runnable chmod u+x ./python3.8
3. Make sure pip is installed ./python3.8 -m ensurepip
4. Install the required modules ./python3.8 -m pip install numpy scipy matplotlib