`TracingNode.display()` does not work in Google Colab

[gavento]

As the title says, TracingNode.display() does not work in Google Colab.
E.g. the following code should produce a static HTML browser of the given tree context. It works in a Jupyter notebook but not in Google Colab.

with TreeTrace("foo") as c:
   pass
c.display()

[spirali]

This is very weird. I have put some logging in the code and it seems that remote Javascript is loaded and full initialization is performed without error only "nothing is displayed". It also seems also that remote script sees elements created by the local JS code, so far I do not see reason why it does not work.