readthedocs.org: rst-versions footer cannot be expanded when using sphinx_rtd_theme

Details

• Read the Docs project URL: http://gather-documentation.readthedocs.io/en/latest/
• Build URL (if applicable): https://readthedocs.org/projects/gather-documentation/builds/7231904/
• Read the Docs username (if applicable): coconutcoo

Expected Result

When clicking the injected rst-versions footer while using sphinx_rtd_theme, the footer should expand and show content.

Actual Result

Page load causes the DOM to crash with the following error:

Uncaught TypeError: Cannot read property 'enable' of undefined
    at HTMLDocument.<anonymous> ((index):288)
    at f (jquery-2.0.3.min.js:3)
    at Object.fireWith [as resolveWith] (jquery-2.0.3.min.js:3)
    at Function.ready (jquery-2.0.3.min.js:1)
    at HTMLDocument.ge (jquery-2.0.3.min.js:1)

Line 288 is a script added during the RTD build, that seems to be for the Sphinx RTD theme:

<script type="text/javascript">
      jQuery(function () {
          SphinxRtdTheme.Navigation.enable(true);
      });
</script>

SphinxRtdTheme.Navigation is supposedly undefined, and SphinxRtdTheme contains only one element; StickyNav. Removing the script, or replacing “Navigation” with “StickyNav” fixes this issue and allows the footer to be expanded as expected.

I wasn’t really sure whether this was an issue to open here or on the sphinx theme’s Github, but since building locally with this theme, the footer isn’t injected, I think this is the correct place.