Fix Item Page (item/xxx) so it Shows Public Forum Posts

[WisTex]

For some reason, /item/xxx does not correctly show public forum posts. It incorrectly treats public forum posts as being privately owned by the forum and therefore blocks anyone else from viewing the forum post.

And, every forum post links to the /item/xxx page, meaning that no one can view the forum post on the forum itself.

[AkselRocks]

Is this really a theme topic or is it a core issue?

[WisTex]

Is this really a theme topic or is it a core issue?

It is a core issue, but I shouldn't depend on others to fix the issue. Ideally, someone involved in the core fixes the issue, because they know the code better, but if they don't, it still needs to be fixed.

And, it is related to the theme in the sense that I am trying to add forum functionality, and, ideally, this is fixed in the core instead of me creating a workaround.