Scroll down selector for vue-recycle-scroller

Hi guys,

when i use scroll down selector for vue-recycle-scroller extention, which only render the visiable element and reuse the few elements always.
it looks the "scroll down selector" lacks the uniqueness judgment of the content.
is there any workaround ?

My sitemap:

{"_id":"vue-test","startUrl":["https://vue-virtual-scroller-demo.netlify.app/dynamic"],"selectors":[{"delay":2000,"elementLimit":500,"id":"msg-item","multiple":true,"parentSelectors":["vue-recycle-scroller__item-wrapper"],"selector":".vue-recycle-scroller__item-view","type":"SelectorElementScroll"},{"id":"msg_text","multiple":false,"parentSelectors":["msg-item"],"regex":"","selector":".text","type":"SelectorText"},{"id":"info","multiple":false,"parentSelectors":["msg-item"],"regex":"","selector":".index","type":"SelectorText"},{"id":"vue-recycle-scroller__item-wrapper","multiple":false,"parentSelectors":["_root"],"selector":".vue-recycle-scroller__item-wrapper","type":"SelectorElement"}]}

Thanks