Setting contentOffset and contentInset in FlatList breaks viewabilityConfigCallbackPairs logic

[viventus]

React Native version: 0.60.5, Platform: iOS

Describe what you expected to happen:
At intial render should call onViewableItemsChanged in viewabilityConfig

Snack, code example, screenshot, or link to a repository:

public render() {
        const viewabilityConfigCallbackPairs: ViewabilityConfigCallbackPairs = [
            {
                viewabilityConfig: {
                    minimumViewTime: 800,
                    itemVisiblePercentThreshold: 50,
                },
                onViewableItemsChanged: ({changed}) => {
                    console.log(changed);
                },
            },
        ];
        
        const contentInset: Insets = {top: 15};
        const contentOffset: PointPropType = {y: -15, x: 0}

        return (
            <FlatList
                ListEmptyComponent={this.renderEmptyElement()}
                ListFooterComponent={FixedFooterBottomInsetView}
                ListHeaderComponent={this.renderHeaderComponent}
                data={items}
                renderItem={this.handleRenderItem}
                keyExtractor={this.keyExtractor}
                onEndReached={this.handleOnEndReach}
                onEndReachedThreshold={REACH_LIST_END_SCREENS}
                viewabilityConfigCallbackPairs={viewabilityConfigCallbackPairs}
                onRefresh={this.handleListRefresh}
                refreshing={isRefreshing}
                showsVerticalScrollIndicator={false}
                onScroll={this.handleScroll}
                maxToRenderPerBatch={MAX_TO_RENDER_PER_BATCH}
                windowSize={WINDOW_SIZE}
                initialNumToRender={INITIAL_NUM_TO_RENDER}
                updateCellsBatchingPeriod={UPDATE_CELLS_BATCHING_PERIOD}
                contentOffset={contentOffset}
                contentInset={contentInset}
                scrollEventThrottle={1}
                automaticallyAdjustContentInsets={false}
                onScrollToIndexFailed={noop}
            />
        );
    }

[viventus]

In native code i see a lot of useful scrollViewDidScroll calls. This calls send events with zero scrollViewContentSize to JS

[viventus]

@shergin Could you help me with this please? )

[viventus]

I guess we should check contentLength before applying new value to _scrollMetrics
https://github.com/facebook/react-native/blob/f8e509382315f84e3c29b07cc174093739ed980f/Libraries/Lists/VirtualizedList.js#L1493

[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.