I noticed in a JupyterBook context and confirmed it goes away with reverting to 0.6.1. You actually seem to have the same problem in your [doc](https://pydata-sphinx-theme.readthedocs.io/en/latest/) (so probably not JupyterBook-related):  I give you that this is quite hard to spot, who looks at these tiny written things there (e.g. copyright notice) 😉?