Enhanced search results in Yoast SEO: Local
One of the hidden features of Yoast SEO: Local is enhancing your website's internal search results with your location content. In rare cases, the enhanced search results can conflict with other plugin or theme features. Therefore, Yoast SEO: Local version 7.1 introduced developer filters to disable these enhancements.
The filters accept a true or false boolean.
To disable searching in location meta fields use:
add_filter( 'yoast_local_seo_enhanced_search_enabled', '__return_false' );
To also disable markup for found locations use:
add_filter( 'yoast_local_seo_enhanced_search_result_enabled', '__return_false' );