scroll上拉加载问题

Version

1.12.38

Reproduction link

https://approval.myoas.com

Steps to reproduce

1.上拉到底部不能加载更多了 2.滑到顶部下拉刷新 3.再向下滚动不会触发滚动加载@pulling-down

What is expected?

1.上拉到底部不能加载更多了 2.滑到顶部下拉刷新 3.再向下滚动触发滚动加载@pulling-down

What is actually happening?

1.上拉到底部不能加载更多了 2.滑到顶部下拉刷新 3.再向下滚动没有触发滚动加载@pulling-down

Dependencies Version

vue: 2.6.11 better-scroll: 2.0.3

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地址访问需要权限，按照步骤很容易复现，希望修复