Sphinx html latest build issues with missing top left icon and dropdown menu not working

[shachafl]

Description

Sphinx html latest build has two issues:

1. Missing top left icon (html_logo)
2. "More" dropdown menu not working on the top navigation bar

Probably an issue with a newer Sphinx version and the old configuration files: docs/source/conf.py & docs/source/_static/my-styles.css

Could be related to https://stackoverflow.com/questions/18023493/bootstrap-dropdown-sub-menu-missing but this did work in the stable version (3y 4m ago)

Note, by changing 'bootstrap_version': "2", in docs/source/conf.py I can fix item (2).

Steps/Code to Reproduce

make docs-html

Expected Results

Built 3y 4m ago
https://spacetx-starfish.readthedocs.io/en/stable/

Actual Results

https://spacetx-starfish.readthedocs.io/en/latest/

Versions

Python 3.6 vs. 3.9
Sphinx==3.5.4 vs. Sphinx==7.1.2