Incorrect "StaringX Documentation" menu

The dark blue header on the TOC at the left of each page of StarlingX documentation (docs.starlingx.io) has a drop down menu titled "StarlingX Documentation", with a triangular 'down' arrow to its right. This menu has only two static entries, "Install Guides" and "API Guides". The Install Guides entry points to the root of the doc set, not the Install Guide. Neither entry updates correctly when switching version, e.g. to release 7.

We don't see any value in this menu given that complete information is available in the TOC and would like to replace it with a static header. I do not see any definition for it in conf.py.

How can we change this behavior?

Thanks.