Left-side TOC collapsed into right-side TOC

[mhostetter]

I discovered that the changes in 1373cd7 cause issues with the left-side and right-side TOCs. Here is my repo built with two consecutive commits. The individual pages in a navigation tab TOC are combined into subheading of one page.

Also, FWIW, the page title on the left-side TOC is colored differently...

Here is a chunk of index.rst.

.. toctree::
   :caption: Getting Started
   :hidden:

   getting-started.rst

.. toctree::
   :caption: Basic Usage
   :hidden:

   basic-usage/galois-field-classes.rst
   basic-usage/compilation-modes.rst
   basic-usage/field-element-representation.rst
   basic-usage/array-creation.rst
   basic-usage/array-arithmetic.rst
   basic-usage/linear-algebra.rst
   basic-usage/poly-creation.rst
   basic-usage/poly-arithmetic.rst

.. toctree::
   :caption: Tutorials
   :hidden:

   tutorials/intro-to-prime-fields.rst
   tutorials/intro-to-extension-fields.rst

Built with e928b18

Built with 1373cd7

[mhostetter]

I just discovered that the TOCs only render incorrectly on the first page in the toctree, "Galois Field Classes" in my case.

You can reproduce this on https://galois.readthedocs.io/en/latest/basic-usage/galois-field-classes.html with these steps:

• Click the "Basic Usage" navigation tab. Notice there is no left-side TOC.

• Click "Compilation Modes" on the right-side TOC. Notice the left-side and right-side TOCs are back in place.

• Click "Galois Field Classes" on the left side and notice the TOCs are messed up again.

[jbms]

I will have to look into this. The first page toc is handled specially so it makes sense that there could be a problem only affecting that.

[jbms]

Note: This issue can also be reproduced with this own theme's documentation:

Notice the incorrect collapsing of the left TOC on this page:

https://jbms.github.io/sphinx-immaterial/demo_api.html

vs this page

https://jbms.github.io/sphinx-immaterial/specimen.html

[mhostetter]

Thank you @jbms! I can confirm the merged fix resolved my issues.