Pull to refresh lagging.

I have RLV with RefreshControl and when i refresh, refresh indicator starts to appear and disappear. my RLV jumping. This issue present only with small amount of elements.

` <View style={{minHeight: Dimensions.get(‘window’).height, width: Dimensions.get(‘window’).width}}>
{ this.state.dataProvider && this.state.data.length > 0 &&

                <RecyclerListView
                    ref={(ref) => this.recyclerView = ref}
                    canChangeSize
                    scrollViewProps={{
                        contentContainerStyle: {paddingBottom: (isIphoneX() ? 140 : 90)},
                        stickyHeaderIndices: [1],
                        refreshControl:  
                            <RefreshControl 
                                refreshing={this.state.refreshing} 
                                onRefresh={async () => {
                                    this.setState({
                                        refreshing: true
                                    });
                                    await this.loadEmployees();
                                    this.setState({
                                        refreshing: false
                                    });
                                }}
                            />
                    }}
                    layoutProvider={this._layoutProvider} 
                    dataProvider={this.state.dataProvider} 
                    rowRenderer={this._rowRenderer}                        
                />    
            }
        </View>

`

[xmuSistone]

@LVBK nice job! After reviewing the source code, i found that _pendingScrollToOffset is used for fix scroll offset after render() called. The _pendingScrollToOffset.y maybe below 0, so in the componentDidUpdate function i add a condition like this:

Hope this defect would be fixed in the next released version.

[AlexSirenko]

Lagging when items in the list fit less the container height