[FlatList] scrollToIndex doesn't scroll right after render

[center-777]

Right after render FlatList with array of several items in data, i load another several items and prepend they to the top of the array, then i call scrollToIndex for scrolling to last scroll position. And FlatList ignores that call. But it works with setTimeout.

React Native version:
System:
OS: macOS 10.14.5
CPU: (12) x64 Intel(R) Core(TM) i7-8750H CPU @ 2.20GHz
Memory: 1.60 GB / 16.00 GB
Shell: 3.2.57 - /bin/bash
Binaries:
Node: 11.9.0 - /usr/local/bin/node
Yarn: 1.13.0 - /usr/local/bin/yarn
npm: 6.9.0 - /usr/local/bin/npm
Watchman: 4.9.0 - /usr/local/bin/watchman
SDKs:
iOS SDK:
Platforms: iOS 12.2, macOS 10.14, tvOS 12.2, watchOS 5.2
IDEs:
Xcode: 10.2.1/10E1001 - /usr/bin/xcodebuild
npmPackages:
react: 16.8.3 => 16.8.3
react-native: https://github.com/expo/react-native/archive/sdk-33.0.0.tar.gz => 0.59.8
npmGlobalPackages:
react-native-cli: 2.0.1

I expected that FlatList being scrolled without setTimeout.

Snack:
https://snack.expo.io/@center-777/flatlist

I logging events right in page content because in console they are not displayed in turn.

[stale]

Hey there, it looks like there has been no activity on this issue recently. Has the issue been fixed, or does it still require the community's attention? This issue may be closed if no further activity occurs. You may also label this issue as a "Discussion" or add it to the "Backlog" and I will leave it open. Thank you for your contributions.

[stale]

Closing this issue after a prolonged period of inactivity. If this issue is still present in the latest release, please feel free to create a new issue with up-to-date information.