From b7761aff89bec93ae298880cda86d5f10da501dd Mon Sep 17 00:00:00 2001
From: Floco <floco@appandflow.com>
Date: Wed, 4 Nov 2026 04:15:13 +0000
Subject: [PATCH] fix(ios): skip provider inset reports while outside a window

A SafeAreaProvider that is laid out but outside a window (for example a tab of a native tab container that was never selected) reports zero safeAreaInsets. A keyboard notification then sent that zero to JS, so the tab's first frame painted with top: 0 and jumped when the real inset arrived.

Skip the measurement without a window, as RNCSafeAreaViewComponentView already does, and request a layout pass when the view enters a window so the first report is always sent.

Fixes #806

Co-authored-by: Nick Lamont <39568874+nicklamont@users.noreply.github.com>
---
 .../RNCSafeAreaProviderComponentView.mm       | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/ios/Fabric/RNCSafeAreaProviderComponentView.mm b/ios/Fabric/RNCSafeAreaProviderComponentView.mm
index b17786d6..96d6fb42 100644
--- a/ios/Fabric/RNCSafeAreaProviderComponentView.mm
+++ b/ios/Fabric/RNCSafeAreaProviderComponentView.mm
@@ -53,6 +53,18 @@ - (void)willMoveToSuperview:(UIView *)newSuperView
     [self registerNotifications];
   }
 }
+
+- (void)didMoveToWindow
+{
+  [super didMoveToWindow];
+
+  // Insets measured while outside a window are skipped, so measure again on entry. safeAreaInsetsDidChange only
+  // fires when the value changes, which it may not if the in-window insets equal the zero held outside the window.
+  // Ask for a layout pass instead of reading here: UIKit may not have updated safeAreaInsets yet.
+  if (self.window != nil) {
+    [self setNeedsLayout];
+  }
+}
 #endif
 
 - (void)registerNotifications
@@ -88,6 +100,13 @@ - (void)invalidateSafeAreaInsetsMeasuringCorners:(BOOL)measureCorners
   if (self.superview == nil) {
     return;
   }
+#if !TARGET_OS_OSX
+  // A view outside a window reports zero safeAreaInsets, e.g. a tab of a native tab container that has not been
+  // selected yet. Keyboard notifications would send that zero to JS, so wait until the view enters a window.
+  if (self.window == nil) {
+    return;
+  }
+#endif
   // This gets called before the view size is set by react-native so
   // make sure to wait so we don't set wrong insets to JS.
   if (CGSizeEqualToSize(self.frame.size, CGSizeZero)) {