Hi.
1. Cache plugin not working with Radius search - the map is not loading on main page and item page

2. problem with function osc_is_login_page()
 * @deprecated since version 3.5.7 use osc_is_login_page()

I am using 3.5.3, not old and not new, but not planning to upgrade, anyway I suggest to cast this function to avoid errors for users with not latest core.

@Ivanko
1) I will check that
2) I can see in functions.php of plugin:
if(!function_exists('osc_is_login_page')) {
  function osc_is_login_page() {
    return osc_is_current_page("login", "");
  }
}