Thanks Thon!
It seem to work all right on that site, when I disable the search override feature, so this might be related to something else as well unfortunately.
One last thing you can try on the live site via a custom code:
add_action('wp_footer', 'wp_footer_asp_custom_redirect', 9999);
function wp_footer_asp_custom_redirect() {
?>
<script>
(function($){
let url = 'https://www.khmeradverts.com/';
$('input.orig').on('keydown', function(e){
let keycode = e.keyCode || e.which;
if ( keycode == 13 ) {
e.preventDefault();
e.stopPropagation();
location.href = url + '?s=' + $(this).val() + '&category=&location=&a=true';
}
});
$('.promagnifier').on('click touchstart', function(e){
e.preventDefault();
e.stopPropagation();
location.href = url + '?s=' + $(this).closest('.asp_m').find('input.orig').val() + '&category=&location=&a=true';
});
})(jQuery);
</script>
<?php
}This will completely prevent any return key or input actions when doing the search, and only does a redirection there. Try adding this code to the functions.php file in your theme/child theme directory – make sure to have a full server back-up first for safety. For more details you can check the safe coding guidelines.
If this does not work, then there is something else conflicting there.