From 2251cf925fef40f36ce7c288585e337bb83c2732 Mon Sep 17 00:00:00 2001
From: Mike Grabowski <grabbou@gmail.com>
Date: Wed, 26 Apr 2017 23:56:10 +0200
Subject: [PATCH] Fix glitch (#1264)

---
 .../react-navigation/src/views/HeaderStyleInterpolator.js     | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/packages/react-navigation/src/views/HeaderStyleInterpolator.js b/packages/react-navigation/src/views/HeaderStyleInterpolator.js
index d73ee030..ea8b03fe 100644
--- a/packages/react-navigation/src/views/HeaderStyleInterpolator.js
+++ b/packages/react-navigation/src/views/HeaderStyleInterpolator.js
@@ -20,8 +20,8 @@ function forLeft(props: NavigationSceneRendererProps): Object {
   const { index } = scene;
   return {
     opacity: position.interpolate({
-      inputRange: [index - 1, index, index + 1],
-      outputRange: ([0, 1, 0]: Array<number>),
+      inputRange: [index - 1, index - 0.5, index, index + 0.5, index + 1],
+      outputRange: ([0, 0, 1, 0, 0]: Array<number>),
     }),
   };
 }