beautiful-boyyy

感觉加了`opacity`那里没说的太明白。由于形成了*stack context*， 两者都变成了上面的第六种情况，即`z-index: auto(0)`， 在根据[文档](https://www.w3.org/TR/CSS2/visuren.html#propdef-z-index)里面的这段话 > Boxes with the same stack level in a stacking context are stacked back-to-front according to document tree order. 即相同stack level的box，层叠顺序由DOM树顺序决定。

是不是你antd版本太低了，最新版本没这问题了

> @beautiful-boyyy 不是，你按照我的步骤是可以复现的，只是这个问题出现的概率较小（实际上就是你传入的：最小高度 * 数量 < 容器高度，但是 item 每一项的实际高度相加后 > 容器高度时，就会出现这个问题），最新版本的 antd 的虚拟滚动都有这个问题 提供一个codesandbox demo吧

> > > @beautiful-boyyy 不是，你按照我的步骤是可以复现的，只是这个问题出现的概率较小（实际上就是你传入的：最小高度 * 数量 < 容器高度，但是 item 每一项的实际高度相加后 > 容器高度时，就会出现这个问题），最新版本的 antd 的虚拟滚动都有这个问题 > > > > > > 提供一个codesandbox demo吧 > > [codesandbox](https://codesandbox.io/p/sandbox/xu-ni-lie-biao-antd-5-15-3-forked-cpjj9l?file=%2Fdemo.tsx%3A10%2C11&layout=%257B%2522sidebarPanel%2522%253A%2522EXPLORER%2522%252C%2522rootPanelGroup%2522%253A%257B%2522direction%2522%253A%2522horizontal%2522%252C%2522contentType%2522%253A%2522UNKNOWN%2522%252C%2522type%2522%253A%2522PANEL_GROUP%2522%252C%2522id%2522%253A%2522ROOT_LAYOUT%2522%252C%2522panels%2522%253A%255B%257B%2522type%2522%253A%2522PANEL_GROUP%2522%252C%2522contentType%2522%253A%2522UNKNOWN%2522%252C%2522direction%2522%253A%2522vertical%2522%252C%2522id%2522%253A%2522clu6nj6sz0006356h70zk1ngo%2522%252C%2522sizes%2522%253A%255B100%252C0%255D%252C%2522panels%2522%253A%255B%257B%2522type%2522%253A%2522PANEL_GROUP%2522%252C%2522contentType%2522%253A%2522EDITOR%2522%252C%2522direction%2522%253A%2522horizontal%2522%252C%2522id%2522%253A%2522EDITOR%2522%252C%2522panels%2522%253A%255B%257B%2522type%2522%253A%2522PANEL%2522%252C%2522contentType%2522%253A%2522EDITOR%2522%252C%2522id%2522%253A%2522clu6nj6sz0002356h5myr0szw%2522%257D%255D%257D%252C%257B%2522type%2522%253A%2522PANEL_GROUP%2522%252C%2522contentType%2522%253A%2522SHELLS%2522%252C%2522direction%2522%253A%2522horizontal%2522%252C%2522id%2522%253A%2522SHELLS%2522%252C%2522panels%2522%253A%255B%257B%2522type%2522%253A%2522PANEL%2522%252C%2522contentType%2522%253A%2522SHELLS%2522%252C%2522id%2522%253A%2522clu6nj6sz0003356hmj2gt0ak%2522%257D%255D%252C%2522sizes%2522%253A%255B100%255D%257D%255D%257D%252C%257B%2522type%2522%253A%2522PANEL_GROUP%2522%252C%2522contentType%2522%253A%2522DEVTOOLS%2522%252C%2522direction%2522%253A%2522vertical%2522%252C%2522id%2522%253A%2522DEVTOOLS%2522%252C%2522panels%2522%253A%255B%257B%2522type%2522%253A%2522PANEL%2522%252C%2522contentType%2522%253A%2522DEVTOOLS%2522%252C%2522id%2522%253A%2522clu6nj6sz0005356hsejn79wk%2522%257D%255D%252C%2522sizes%2522%253A%255B100%255D%257D%255D%252C%2522sizes%2522%253A%255B50%252C50%255D%257D%252C%2522tabbedPanels%2522%253A%257B%2522clu6nj6sz0002356h5myr0szw%2522%253A%257B%2522id%2522%253A%2522clu6nj6sz0002356h5myr0szw%2522%252C%2522tabs%2522%253A%255B%257B%2522id%2522%253A%2522cluavyy9z0002356heptgsj6m%2522%252C%2522mode%2522%253A%2522permanent%2522%252C%2522type%2522%253A%2522FILE%2522%252C%2522initialSelections%2522%253A%255B%257B%2522startLineNumber%2522%253A10%252C%2522startColumn%2522%253A11%252C%2522endLineNumber%2522%253A10%252C%2522endColumn%2522%253A11%257D%255D%252C%2522filepath%2522%253A%2522%252Fdemo.tsx%2522%252C%2522state%2522%253A%2522IDLE%2522%257D%255D%252C%2522activeTabId%2522%253A%2522cluavyy9z0002356heptgsj6m%2522%257D%252C%2522clu6nj6sz0005356hsejn79wk%2522%253A%257B%2522id%2522%253A%2522clu6nj6sz0005356hsejn79wk%2522%252C%2522activeTabId%2522%253A%2522cluavxmf00016356hunzcdfey%2522%252C%2522tabs%2522%253A%255B%257B%2522type%2522%253A%2522UNASSIGNED_PORT%2522%252C%2522port%2522%253A0%252C%2522id%2522%253A%2522cluavxmf00016356hunzcdfey%2522%252C%2522mode%2522%253A%2522permanent%2522%252C%2522path%2522%253A%2522%252F%2522%257D%255D%257D%252C%2522clu6nj6sz0003356hmj2gt0ak%2522%253A%257B%2522tabs%2522%253A%255B%255D%252C%2522id%2522%253A%2522clu6nj6sz0003356hmj2gt0ak%2522%257D%257D%252C%2522showDevtools%2522%253Atrue%252C%2522showShells%2522%253Afalse%252C%2522showSidebar%2522%253Atrue%252C%2522sidebarPanelSize%2522%253A15%257D) 貌似没权限

> > > @beautiful-boyyy 不是，你按照我的步骤是可以复现的，只是这个问题出现的概率较小（实际上就是你传入的：最小高度 * 数量 < 容器高度，但是 item 每一项的实际高度相加后 > 容器高度时，就会出现这个问题），最新版本的 antd 的虚拟滚动都有这个问题 > > > > > > 提供一个codesandbox demo吧 > > [codesandbox](https://codesandbox.io/p/sandbox/xu-ni-lie-biao-antd-5-15-3-forked-cpjj9l?file=%2Fdemo.tsx%3A10%2C11&layout=%257B%2522sidebarPanel%2522%253A%2522EXPLORER%2522%252C%2522rootPanelGroup%2522%253A%257B%2522direction%2522%253A%2522horizontal%2522%252C%2522contentType%2522%253A%2522UNKNOWN%2522%252C%2522type%2522%253A%2522PANEL_GROUP%2522%252C%2522id%2522%253A%2522ROOT_LAYOUT%2522%252C%2522panels%2522%253A%255B%257B%2522type%2522%253A%2522PANEL_GROUP%2522%252C%2522contentType%2522%253A%2522UNKNOWN%2522%252C%2522direction%2522%253A%2522vertical%2522%252C%2522id%2522%253A%2522clu6nj6sz0006356h70zk1ngo%2522%252C%2522sizes%2522%253A%255B100%252C0%255D%252C%2522panels%2522%253A%255B%257B%2522type%2522%253A%2522PANEL_GROUP%2522%252C%2522contentType%2522%253A%2522EDITOR%2522%252C%2522direction%2522%253A%2522horizontal%2522%252C%2522id%2522%253A%2522EDITOR%2522%252C%2522panels%2522%253A%255B%257B%2522type%2522%253A%2522PANEL%2522%252C%2522contentType%2522%253A%2522EDITOR%2522%252C%2522id%2522%253A%2522clu6nj6sz0002356h5myr0szw%2522%257D%255D%257D%252C%257B%2522type%2522%253A%2522PANEL_GROUP%2522%252C%2522contentType%2522%253A%2522SHELLS%2522%252C%2522direction%2522%253A%2522horizontal%2522%252C%2522id%2522%253A%2522SHELLS%2522%252C%2522panels%2522%253A%255B%257B%2522type%2522%253A%2522PANEL%2522%252C%2522contentType%2522%253A%2522SHELLS%2522%252C%2522id%2522%253A%2522clu6nj6sz0003356hmj2gt0ak%2522%257D%255D%252C%2522sizes%2522%253A%255B100%255D%257D%255D%257D%252C%257B%2522type%2522%253A%2522PANEL_GROUP%2522%252C%2522contentType%2522%253A%2522DEVTOOLS%2522%252C%2522direction%2522%253A%2522vertical%2522%252C%2522id%2522%253A%2522DEVTOOLS%2522%252C%2522panels%2522%253A%255B%257B%2522type%2522%253A%2522PANEL%2522%252C%2522contentType%2522%253A%2522DEVTOOLS%2522%252C%2522id%2522%253A%2522clu6nj6sz0005356hsejn79wk%2522%257D%255D%252C%2522sizes%2522%253A%255B100%255D%257D%255D%252C%2522sizes%2522%253A%255B50%252C50%255D%257D%252C%2522tabbedPanels%2522%253A%257B%2522clu6nj6sz0002356h5myr0szw%2522%253A%257B%2522id%2522%253A%2522clu6nj6sz0002356h5myr0szw%2522%252C%2522tabs%2522%253A%255B%257B%2522id%2522%253A%2522cluavyy9z0002356heptgsj6m%2522%252C%2522mode%2522%253A%2522permanent%2522%252C%2522type%2522%253A%2522FILE%2522%252C%2522initialSelections%2522%253A%255B%257B%2522startLineNumber%2522%253A10%252C%2522startColumn%2522%253A11%252C%2522endLineNumber%2522%253A10%252C%2522endColumn%2522%253A11%257D%255D%252C%2522filepath%2522%253A%2522%252Fdemo.tsx%2522%252C%2522state%2522%253A%2522IDLE%2522%257D%255D%252C%2522activeTabId%2522%253A%2522cluavyy9z0002356heptgsj6m%2522%257D%252C%2522clu6nj6sz0005356hsejn79wk%2522%253A%257B%2522id%2522%253A%2522clu6nj6sz0005356hsejn79wk%2522%252C%2522activeTabId%2522%253A%2522cluavxmf00016356hunzcdfey%2522%252C%2522tabs%2522%253A%255B%257B%2522type%2522%253A%2522UNASSIGNED_PORT%2522%252C%2522port%2522%253A0%252C%2522id%2522%253A%2522cluavxmf00016356hunzcdfey%2522%252C%2522mode%2522%253A%2522permanent%2522%252C%2522path%2522%253A%2522%252F%2522%257D%255D%257D%252C%2522clu6nj6sz0003356hmj2gt0ak%2522%253A%257B%2522tabs%2522%253A%255B%255D%252C%2522id%2522%253A%2522clu6nj6sz0003356hmj2gt0ak%2522%257D%257D%252C%2522showDevtools%2522%253Atrue%252C%2522showShells%2522%253Afalse%252C%2522showSidebar%2522%253Atrue%252C%2522sidebarPanelSize%2522%253A15%257D) 你提供的demo没有用到antd List，antd List没有暴露 height，itemHeight接口，之前的bug也在前几个版本就修复了，virtual-list这里的逻辑确实有问题，单独使用的话确实会有bug，我之前也提了一个pr，但是测试没跑过，你可能需要提供正确的测试用例。

> `@alilc/antd-lowcode-materials` 用的哪个版本？ 1.2.1

一个组件能否被选中是在哪个模块设定的？

1， 2， 4大家不一定用过，3大家都了解，没有特别的需要当然就3咯，引擎能简单点就简单点。


我这边是正常的