pauseOnMouseEnter Autoplay Why can the mouse automatically scroll after being moved in?

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The code is as follows：

<swiper
        direction="vertical"
        :loop="true"
        :loopAdditionalSlides="1"
        :disableOnInteraction="false"
        :pauseOnMouseEnter="true"
        :reverseDirection="true"
        :autoplay-delay="1000"
        :autoplay="true"
        :centeredSlides="true"
        :modules="[Autoplay, EffectFade]"
        @slideChange="onSlideChange"
        ref="swiperRef"
      >
        <swiper-slide v-for="(slide, index) in slides" :key="index">
          <h2>{{ slide.title }}</h2>
        </swiper-slide>
      </swiper>

pauseOnMouseEnter:Why can the mouse automatically scroll after being moved in when set to true?