From e4fd9babe03d82fcf39ba6a46376f746a8a3e960 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Danilo=20B=C3=BCrger?= <info@danilobuerger.de>
Date: Mon, 4 Feb 2019 08:11:51 -0800
Subject: [PATCH] Fix regression of VirtualizedList jumpy header (#22025)

Summary:
Fixes #20956, #21361, #21198, #21468
Keeps the intended outcome of #18105
Pull Request resolved: https://github.com/facebook/react-native/pull/22025

Differential Revision: D13941915

Pulled By: cpojer

fbshipit-source-id: 59a0a834ea2d0dd4678e80a82ddaf95cecf87d38
---
 Libraries/Lists/VirtualizedList.js | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/Libraries/Lists/VirtualizedList.js b/Libraries/Lists/VirtualizedList.js
index f6a9c6e2ee7c6e..8455c51d6167b8 100644
--- a/Libraries/Lists/VirtualizedList.js
+++ b/Libraries/Lists/VirtualizedList.js
@@ -806,7 +806,10 @@ class VirtualizedList extends React.PureComponent<Props, State> {
             if (stickyIndicesFromProps.has(ii + stickyOffset)) {
               const initBlock = this._getFrameMetricsApprox(lastInitialIndex);
               const stickyBlock = this._getFrameMetricsApprox(ii);
-              const leadSpace = stickyBlock.offset - initBlock.offset;
+              const leadSpace =
+                stickyBlock.offset -
+                initBlock.offset -
+                (this.props.initialScrollIndex ? 0 : initBlock.length);
               cells.push(
                 <View key="$sticky_lead" style={{[spacerKey]: leadSpace}} />,
               );