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telerik / kendo-react

Issue tracker - KendoReact http://www.telerik.com/kendo-react-ui/
https://kendo-react-teal.vercel.app
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DropDown with Virtual scrolling not showing all items when scrolling up. #163

Open simonssspirit opened 5 years ago

simonssspirit commented 5 years ago

DropDown with Virtual scrolling not showing all items when scrolling up.

This occurs when the page size is more than 3 times bigger than the visible items. Also, it occurs only when the mouse wheel is used for scrolling.

This is an example: https://stackblitz.com/edit/react-4skf9l?file=app/main.js

We have to make additional research why this occurs only when the mouse wheel is used.

kdikov82 commented 2 years ago

Reproducible with version 5.5.0 as well: https://stackblitz.com/edit/react-7ri5fm?file=app%2Fmain.jsx

*Note - The problem is not replicated all the time and I see a pattern that scrolling up faster with the mouse wheel is when the problem is most likely to occur.