For some reason when some links are clicked, especially from external sites or search results, an equal symbol will be appended to the URL. Before we started using an SEO plugin this would cause the visitor to be redirected to the main page and contributes to a large bounce rate. Now with the SEO plugin it gives a page not found error. I've tried several rewrite and redirect rules in .htaccess with no luck. I need to be able to remove the equal symbol from the end of the URL, any URL. I'd really appreciate any assistance with this.
Example Bad URL:
Example Bad URL: