Node labels are missing in Sankey SVG export

📊 Plotly Python
1

Hi,
Trying the example of the documentation under Spyder give me a diagram without label.
Did I miss something?
The code is the first example of this page: Sankey Diagram | Python | Plotly

Figure 2021-04-14 185033
Figure 2021-04-14 185033700×450 6.24 KB

I am running with plotly 4.14.3
EDIT: It seems that the problem is only arising when trying to export in svg format (with orca or kaleido). Png and pdf look good.
Thanks,
A.