Help Wanted: Right panel highlight is one index previous

[apshada]

Current

Entry point: https://docs.mattermost.com/about/product.html#collaboration-workflows-addressed-by-mattermost

Issue: Clicking on Collaboration workflows addressed by Mattermost, the right panel highlight part is one index previous.

Screenshot:

Desired

Right panel heading list correctly matches center pane selection.

Action

The Mattermost Product Documentation site theme is driven by Furo.

1. Review the Furo theme documentation, changelog, and issues to see if this one-index-previous issue has been logged and/or resolved.

If a resolution exists in a newer release than 2023.9.10:

a) Update the Furo dependency for this docs GitHub repository to see if the issue is successfully resolved by upgrading.
b) Perform a site-wide spot check to identify any unexpected issues post-dependency upgrade that need attention.

[lindy65]

Thank you @apshada! This issue will count towards QA Contributors Docathon.

[cwarnermm]

Also observed and reported by @Rutam21, as follows:

The Heading Catalogue navigation available on the right side of each of the pages with multiple headings is broken.

Following issues are observed.

The 1st Heading on the right side catalogue doesn't get highlighted when we select it on a page.
The 1st Heading gets selected when we click on the 2nd available heading on the page.
When we click on the 3rd available heading on the page, the catalogue selection abruptly jumps to the last one.
The last one stays selected for all the other available heading selections on the page.
There's no change of selection even if we click on the last heading once and then try clicking on the other available headings on the page after that.

Heading.Catalogue.Error.mp4