I installed a plugin called Ajax Filter Posts.
It uses a shortcode to display content. I inserted the shortocde in the post content, but data is displayed twice on my website - in the correct place (post content) and also in incorrect place (top of website - <head> section of the template).
Can you let me know what might cause this strange behaviour? The plugin is heavily based on jQuery and Ajax and loads scripts using wp_enqueue_script in to the <head> section - but why does it load the content in there too?
I would be grateful for your help.