List jumps to the top of the List when onStartReached is called

[CrypticMindz]

I'm fetching data from an API which will either be appended at the end of the List (onEndReached) or the beginning of the list (onStartReached).
However when onStartReached is triggered, the list will jump to the very top, which will then again call onStartReached. It should not jump to the top of the list. Even with enableAutoscrollToTop set to false, which I know is the default value, it still jumps to the top.
When I reach the end (onEndReached) everything works as expected.

[CrypticMindz]

For future reference: keyExtractor is the most crucial thing. If set correctly, this list works perfectly fine, so mistake on my end.

[dr1verrr]

In my case list jumps absolutely randomly, sometimes it works