DataTable virtualScroll index bug

[primperfum]

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[X] bug report
[ ] feature request
[ ] support request => Please do not submit support request here, instead see https://forum.primefaces.org/viewforum.php?f=57

Current behavior

When scrolling my dataTable with virtualScroller (with preloaded data) from bottom to top there is a point where no data is present and there is no dataTable row displayed. When inspecting the issue it seems the problem happens when onScrollIndexChange event has e.first < 0 {first: -12, last: 79} scrolling further to top -> everything is back to normal when e.first >= 0 {first: 0 last: 72} . Don't know why and how it happens that e.first < 0.

Expected behavior
Data should be visible in any point when scrolling with virtualScroller. Make e.first not possible to be < 0, find why and fix the issue or just make it that if e.first < 0 then just use 0 with proper e.last translation. In my example would be just to use.

• React version:

17.0.1

• PrimeReact version:

7.0.0

• Browser: [all | Chrome XX | Firefox XX | IE XX | Safari XX | Mobile Chrome XX | Android X.X Web Browser | iOS XX Safari | iOS XX UIWebView | iOS XX WKWebView ]

• Language: [all | TypeScript X.X | ES6/7 | ES5]