Ok further inspection shows that the post is showing up when I mark “Include in blog”, whereas I had it marked as “exclude in blog”, but this doesn’t work for me, as I don’t want these posts to show up in the blog post list.

You’re missing the point, the URL’s are broken or something. When I click the link to a sticky post, it does not load the page it shows an error!

Please let me know if you need any more specific information than that, also I have tried changing permalinks and I have tried changing my .htaccess.

The links work fine if I change the theme to a different theme, so I have narrowed the issue down to specifically this theme and specifically only in the instance of selecting “Exclude from blog”

Thank you

I’ve found the issue, and this is a weirdly specific case, but I had to change the ./admin/pre-get-posts.php file function to include the (is_home()) conditional and it worked. I’m still confused as to why this situation occured, as it was seemingly out of nowhere, but it looks like the conditional was commented out at one point or another, so by switching the commented line, I was able to get the normal functionality back. Thank you for you support!