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Fix regression of VirtualizedList jumpy header (#22025)

Summary:
Fixes #20956, #21361, #21198, #21468
Keeps the intended outcome of #18105
Pull Request resolved: #22025

Differential Revision: D13941915

Pulled By: cpojer

fbshipit-source-id: 59a0a834ea2d0dd4678e80a82ddaf95cecf87d38
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danilobuerger authored and facebook-github-bot committed Feb 4, 2019
1 parent cca1cdf commit e4fd9babe03d82fcf39ba6a46376f746a8a3e960
Showing with 4 additions and 1 deletion.
  1. +4 −1 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}} />,
);

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