From d433da1b2fe102e541becd7014dc8bd0be216a71 Mon Sep 17 00:00:00 2001
From: Adam Gleitman <adam.gleitman@gmail.com>
Date: Mon, 6 Nov 2023 22:01:16 -0800
Subject: [PATCH] Don't recreate identical NSTrackingAreas (#1972)

Co-authored-by: Adam Gleitman <adgleitm@microsoft.com>
---
 packages/react-native/React/Views/RCTView.m | 23 +++++++++++++--------
 1 file changed, 14 insertions(+), 9 deletions(-)

diff --git a/packages/react-native/React/Views/RCTView.m b/packages/react-native/React/Views/RCTView.m
index a78ff67c30f6b7..69f933cf86a3a7 100644
--- a/packages/react-native/React/Views/RCTView.m
+++ b/packages/react-native/React/Views/RCTView.m
@@ -1491,16 +1491,21 @@ - (BOOL)acceptsFirstResponder
 
 - (void)updateTrackingAreas
 {
-  if (_trackingArea) {
-    [self removeTrackingArea:_trackingArea];
-  }
+  BOOL hasMouseHoverEvent = self.onMouseEnter || self.onMouseLeave;
+  BOOL wouldRecreateIdenticalTrackingArea = hasMouseHoverEvent && _trackingArea && NSEqualRects(self.bounds, [_trackingArea rect]);
+
+  if (!wouldRecreateIdenticalTrackingArea) {
+    if (_trackingArea) {
+      [self removeTrackingArea:_trackingArea];
+    }
 
-  if (self.onMouseEnter || self.onMouseLeave) {
-    _trackingArea = [[NSTrackingArea alloc] initWithRect:self.bounds
-                                                 options:NSTrackingActiveAlways|NSTrackingMouseEnteredAndExited
-                                                   owner:self
-                                                userInfo:nil];
-    [self addTrackingArea:_trackingArea];
+    if (hasMouseHoverEvent) {
+      _trackingArea = [[NSTrackingArea alloc] initWithRect:self.bounds
+                                                   options:NSTrackingActiveAlways|NSTrackingMouseEnteredAndExited
+                                                     owner:self
+                                                  userInfo:nil];
+      [self addTrackingArea:_trackingArea];
+    }
   }
 
   [super updateTrackingAreas];