No plot displayed in VS Code widget

[T-Flet]

I tried the widget renderer example in the documentation in VS Code, where no errors are raised (ignoring deprecations due to altair 5.x) but it is not clear whether the plot is generated since the widget area is too small:

Clicking on the VegaFusion logo and scrolling down suggests that the plot is not placed in the area at all (since the scroll distance is only for the opened menu):

Everything displays normally in a standard jupyter notebook (deprecations but present and working plot).

Versions:

• VegaFusion and vegafusion-jupyter 1.3
• Altair 5.0.1
• Python 3.10.4 (conda env on Windows 11)