Narrowed this issue down to some bad data inside the post records themselves.
The forum data I have was imported – the importer worked great!
I have also tried changing my permalinks settings, also same behavior.
Also for reference, here is a page with the shortcode as described in the documentation to display a single forums topics. eg. [bbp-single-forum id=32].
General
I’ve tried to create pages with shortcodes, but the result is the same.
I’ve disabled all of the un-related plugins, still same behavior.
All of my plugins are at the latest version, running the latest version of wordpress as of July 1, 2017.
Plugins that are active:
bbPress Version 2.5.12
bbPress Messages Version 2.0.7
Currently disabled:
gd bbPress Version 2.4