running a site on https gives you a warning of insecure content because it's trying to load the plugin style.css file through http.
see line 31 of search-filter.php
see: https://wordpress.org/ideas/topic/wp_plugin_url-doesnt-take-ssl-into-account
and: http://codex.wordpress.org/Determining_Plugin_and_Content_Directories
I don't have time to put together a pull request for you on this, but it would be a wise change...
running a site on https gives you a warning of insecure content because it's trying to load the plugin style.css file through http.
see line 31 of search-filter.php
see: https://wordpress.org/ideas/topic/wp_plugin_url-doesnt-take-ssl-into-account
and: http://codex.wordpress.org/Determining_Plugin_and_Content_Directories
I don't have time to put together a pull request for you on this, but it would be a wise change...