From da80e37433e9b824abf3b49e45abfc3f98997915 Mon Sep 17 00:00:00 2001
From: Justin Huntington <justin@naraorganics.com>
Date: Sat, 29 Aug 2020 13:48:43 -0400
Subject: [PATCH] disable new iOS 13 behavior
 automaticallyAdjustsScrollIndicatorInsets

---
 React/Views/ScrollView/RCTScrollView.m | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/React/Views/ScrollView/RCTScrollView.m b/React/Views/ScrollView/RCTScrollView.m
index 77f1c62b5a1b66..ec1903ffedfb1d 100644
--- a/React/Views/ScrollView/RCTScrollView.m
+++ b/React/Views/ScrollView/RCTScrollView.m
@@ -299,6 +299,16 @@ - (instancetype)initWithEventDispatcher:(id<RCTEventDispatcherProtocol>)eventDis
     }
 #endif
 
+#if defined(__IPHONE_OS_VERSION_MAX_ALLOWED) && __IPHONE_OS_VERSION_MAX_ALLOWED >= 130000 /* __IPHONE_13_0 */
+  // `automaticallyAdjustsScrollIndicatorInsets` is available since iOS 13.
+  // We set the default behavior to NO to match iOS <13 behavior.
+  if ([_scrollView respondsToSelector:@selector(setAutomaticallyAdjustsScrollIndicatorInsets:)]) {
+    if (@available(iOS 13.0, *)) {
+      _scrollView.automaticallyAdjustsScrollIndicatorInsets = NO;
+    }
+  }
+#endif
+
     _automaticallyAdjustContentInsets = YES;
     _contentInset = UIEdgeInsetsZero;
     _lastClippedToRect = CGRectNull;