DEMO fixed with jupyter-widgets/ipywidgets#4002

Author: Alan

.github/workflows/main.yml

@@ -104,6 +104,10 @@ jobs:
       - name: Validate the labextension
         run: jupyter labextension list 2>&1 | grep jupyter-matplotlib
 
+      - name: Temp install ipywidgets patched version
+      # Corresponds to https://github.com/jupyter-widgets/ipywidgets/pull/4002
+        run: pip install --force-reinstall https://github.com/fleming79/ipylab/releases/download/v2.0.9/ipywidgets-8.1.8-py3-none-any.whl
+
       - name: Run pytest
         run: pytest -v .