fade effect not work in dir="rtl"

my React website from right to left
``
and I have react-slide to show 1 image every slide
`const settings = {
dots: true,
infinite: true,
autoplaySpeed:1500,
speed: 1000,
slidesToShow: 1,
slidesToScroll: 1,
autoplay: true,
arrows: false,
initialSlide: 0,
fade: true,
rtl: true
};`
my problem is fade effect not show any image !!!!