Wrong widget initial state

[davidbrochart]

Description

Running the notebooks/basics.ipynb notebook, I see:

Reproduce

1. mamba install voila ipykernel ipywidgets pandas
2. voila notebooks/basics.ipynb

Expected behavior

When moving the slider, the value of x2 updates, but initially we should see x2 = 16 for x = 4.

Context

• voila version 0.2.14
• Operating System and version: Ubuntu 21.04
• Browser and version: any browser

[jtpio]

Thanks @davidbrochart for reporting 👍

Probably something to do with the code of the example notebook.

Running the first cell in JupyterLab gives the same:

So we might want to update the notebook to avoid that kind of confusion.