I’ve got quite weird problem. I built product filtering options, sometimes the server is slower so I wanted to add a loading spinner while you wait for the results. I only managed 50% because it works on desktop browsers and, unfortunately, nothing shows on mobile. Anyone have an idea why this can happen?

    $('.auto_submit_item').change(function(){
        var filter = $('#filter');
        jQuery('#m-spinner').addClass('is-active');
        $.ajax({
            url:filter.attr('action'),
            data:filter.serialize(), // form data
            type:filter.attr('method'), // POST
            beforeSend:function(xhr){
                // jQuery('#m-spinner').addClass('is-active'); //option2
            },
            success:function(data){
                // jQuery('#m-spinner').removeClass('is-active'); //option2
                $('#response').html(data);
            }
        }, function( response ) {

            jQuery('#m-spinner').removeClass("is-active"); 
       });
        return false;
    });

I tried both options, one which is visible right now, and second one which is in comments. Both options work on desktop but dont work on mobile android and/or iOS.
Any idea how to fix it?