Inverted FlatList scroll issue on Android

[lebedev]

Hi.

I've found a bug. If you pass inverted prop to FlatList with RNGH scroll, then FlatList would scroll in opposite direction sometimes if you make short quick scroll gestures. This happens on Android only. iOS isn't affected.

See the video. Notice directions of gestures I make.

Check testcase repo. It's easily reproducible.

[TheBottleSeller]

Duplicate: check out facebook/react-native#19434

[lebedev]

It's not. The bug is reproducible on Android API 26 (lower that P), and if in my testcase repo you replace ScrollView import from RNGH to that from react-native, then it would work as intended. So it's specifically a RNGH issue, and doesn't come from upstream.

[TheBottleSeller]

Ah noted, thanks for clarifying... will strike out my comment. Good luck, currently this is the behaviour being seeing on Android Pi for even the RN ScrollView

[kabus202]

any update on this issue? @angly-cat did you solve this problem?

[lebedev]

@kabus202 I didn't. I just removed using RNGH's ScrollView in my inverted FlatList.

[OmarBasem]

I am having the same problem, will react native team ever fix this? :/

[danieljennings]

Looks like it was fixed in RN (and Expo) source code in November:
facebook/react-native@b971c5b

[lebedev]

I've tested my testcase with the latest RNGH and react-native@0.58.0-rc.3 and it seems that the issue is indeed fixed. Therefore closing this issue as resolved.