openstackdocstheme "Previous (<<)" confused/corrupted by autodoc modules

[Michael Johnson]

What a project is using the pbr "autodoc_index_modules = True" to generate module documentation, the page after a page that has a link to the modules will have a corrupted "<<" previous navigation link (see the attached image).

If I re-order my top level document such that the "Octavia User" section comes before the "Octavia Contributor" section this issue goes away. It appears to be caused by the last link on the "Octavia Contributor" page being the "* :ref:`modindex`" tag.

This can be viewed on a in review patch: http://docs-draft.openstack.org/47/478947/7/check/gate-octavia-docs-ubuntu-xenial/606bb7e//doc/build/html/user/index.html

Clicking the broken link takes me to the last module page titled "The octavia.version Module"

[Michael Johnson (johnsom)]

The auto-generated file the previous link is pointing to has:

The :mod:`octavia.version` Module
=================================

.. automodule:: octavia.version
  :members:
  :undoc-members:
  :show-inheritance: