请教下当使用在可折叠工具栏布局的时候的问题

基本布局为：
CoordinatorLayout+IRecyclerView ：页面主要部分
AppBarLayout+ CollapsingToolbarLayout+Toolbar：页面顶部工具栏

来实现滑动下方rv的时候折叠和展开toolbar，用您的SwipeToLoadLayout组件时，运作都是正常的。但换成IRecyclerView后，当向上滑动rv折叠工具栏后，便无法再下滑rv展开toolbar，而且滑动rv有点卡顿。

Reproduce the issue with CoordinatorLayout, IRecyclerView, AppBarLayout, CollapsingToolbarLayout, and Toolbar, first comparing the working SwipeToLoadLayout behavior with IRecyclerView. Verify that upward scrolling collapses the toolbar, downward scrolling expands it again, and scrolling remains smooth; no source files or tests are named in the issue.

Written by the indexing model from the issue text.