Why is conditionally loading a custom plugin’s code only on a specific custom post type causing the site content to disappear?
I realize you’ve already answered your issue. However, I think there is some additional explanation possible to give more clarity to the issue and the solution. The issue is your lqdnotes_add_div() function. This is hooked to a filter – the_content. In WordPress, any time you use a filter, your filter function must return a value … Read more