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Allow prepending new items to FlatLists without side effects
Ioannis Kokkinidis
When prepending stuff to FlatLists or SectionLists or any VirtualisedList for that matter, the list re-indexes it's children, and we end up with a wrong child showing up (The new index now refers to a totally different child, so it's as if the list scrolls to something else than the child we were on before the prepend).
https://github.com/facebook/react-native/issues/25239#issuecomment-521194810
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Frank He
There's some examples on https://reactnativeexample.com/
Are you using the keyExtractor prop correctly? The way you're explaining the issue here doesn't seem the same as the GitHub issue you linked to. A repro case in snack with a video would make it easier for people to help you debug.