Can not drag scrollBar when scroll stopped!

[dwb1994]

Navigator: chrome 92.0.4515.131 (x86_64) System: Mac OS Big Sur 11.5 (20G71)

How to reproduction: Chrome's setting: close Hardware Acceleration !important Now: Can not hover to drag scrollBar when scroll stopped; Can hover to drag when scrolling; Expect: Can hover to drag scrollBar when scroll stopped; Or hide scrollBar when scroll stopped Reproduction link: https://rc-virtual-list.react-component.vercel.app/?selectedKind=rc-virtual-list&selectedStory=basic&full=0&addons=1&stories=1&panelRight=0&addonPanel=storybook%2Factions%2Factions-panel

如何复现：关闭 chrome 设置里的“硬件加速” 现状：不滚动时不能拖动滚动条；滚动时能拖动滚动条 希望：不滚动时能正常拖动滚动条；或者不滚动时隐藏滚动条 复现地址: https://rc-virtual-list.react-component.vercel.app/?selectedKind=rc-virtual-list&selectedStory=basic&full=0&addons=1&stories=1&panelRight=0&addonPanel=storybook%2Factions%2Factions-panel