[Swiper] loop 모드일때 duplication 이 제대로 안될때

loopedSlides: 1 을 넣어주면 된다

	var swiper = new Swiper('.swiper-container', {
		speed: 300,
		spaceBetween: 50,
		width:300,
		loop:true,
		loopedSlides: 1,
		pagination:{
			el:".swiper-scrollbar",
		},
	})
});

다른 해법 
github.com/nolimits4web/swiper/issues/2629

In loop mode, duplicate slides are not being updated when the contents of the original slides change · Issue #2629 · nolimits4