Progress bars don't render on Gradient notebook


I’ve noticed that progress bars generated with ipywidgets do not appear to render in Gradient notebooks:

As described in this SO answer, this is usually resolved by using the JupyterLab extension manager, however it would be nice if this “just worked” on every instance running JupyterLab.

A simple fix would be to upgrade to JupyterLab v3.x.x which has greatly simplified the installation of plugins (most just work with pip install).

In the meantime, does anyone have any ideas on how to fix this on Gradient?