[pv]skip non-tappable web view workaround on ios 26.4 (#185424) The upstream bug has been fixed on iOS 26.4 (PR: https://github.com/WebKit/WebKit/pull/57358), so we can skip the hacky workaround now. Fixes https://github.com/flutter/flutter/issues/185372 ## Pre-launch Checklist - [x] I read the [Contributor Guide] and followed the process outlined there for submitting PRs. - [x] I read the [AI contribution guidelines] and understand my responsibilities, or I am not using AI tools. - [x] I read the [Tree Hygiene] wiki page, which explains my responsibilities. - [x] I read and followed the [Flutter Style Guide], including [Features we expect every widget to implement]. - [x] I signed the [CLA]. - [x] I listed at least one issue that this PR fixes in the description above. - [x] I updated/added relevant documentation (doc comments with `///`). - [x] I added new tests to check the change I am making, or this PR is [test-exempt]. - [x] I followed the [breaking change policy] and added [Data Driven Fixes] where supported. - [ ] All existing and new tests are passing. If you need help, consider asking for advice on the #hackers-new channel on [Discord]. If this change needs to override an active code freeze, provide a comment explaining why. The code freeze workflow can be overridden by code reviewers. See pinned issues for any active code freezes with guidance. **Note**: The Flutter team is currently trialing the use of [Gemini Code Assist for GitHub](https://developers.google.com/gemini-code-assist/docs/review-github-code). Comments from the `gemini-code-assist` bot should not be taken as authoritative feedback from the Flutter team. If you find its comments useful you can update your code accordingly, but if you are unsure or disagree with the feedback, please feel free to wait for a Flutter team member's review for guidance on which automated comments should be addressed.  [Contributor Guide]: https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md#overview [AI contribution guidelines]: https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md#ai-contribution-guidelines [Tree Hygiene]: https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md [test-exempt]: https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md#tests [Flutter Style Guide]: https://github.com/flutter/flutter/blob/main/docs/contributing/Style-guide-for-Flutter-repo.md [Features we expect every widget to implement]: https://github.com/flutter/flutter/blob/main/docs/contributing/Style-guide-for-Flutter-repo.md#features-we-expect-every-widget-to-implement [CLA]: https://cla.developers.google.com/ [flutter/tests]: https://github.com/flutter/tests [breaking change policy]: https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md#handling-breaking-changes [Discord]: https://github.com/flutter/flutter/blob/main/docs/contributing/Chat.md [Data Driven Fixes]: https://github.com/flutter/flutter/blob/main/docs/contributing/Data-driven-Fixes.md

diff --git a/engine/src/flutter/shell/platform/darwin/ios/framework/Source/FlutterPlatformViews.mm b/engine/src/flutter/shell/platform/darwin/ios/framework/Source/FlutterPlatformViews.mm
index c347358..a00c4e8 100644
--- a/engine/src/flutter/shell/platform/darwin/ios/framework/Source/FlutterPlatformViews.mm
+++ b/engine/src/flutter/shell/platform/darwin/ios/framework/Source/FlutterPlatformViews.mm

@@ -658,7 +658,10 @@
       // from the web view plugin level. Right now we only observe this issue for
       // FlutterPlatformViewGestureRecognizersBlockingPolicyEager, but we should try it if a similar
       // issue arises for the other policy.
-      if (@available(iOS 26.0, *)) {
+      if (@available(iOS 26.4, *)) {
+        // Skip workaround as this non-tappable web view bug has been fixed on iOS 26.4.
+        // See: https://github.com/WebKit/WebKit/pull/57358.
+      } else if (@available(iOS 26.0, *)) {
         // This performs a nested DFS, with the outer one searching for any web view, and the inner
         // one searching for a TouchEventsGestureRecognizer inside the web view. Once found, disable
         // and immediately reenable it to reset its state.

diff --git a/engine/src/flutter/shell/platform/darwin/ios/framework/Source/FlutterPlatformViewsTest.mm b/engine/src/flutter/shell/platform/darwin/ios/framework/Source/FlutterPlatformViewsTest.mm
index 48e9358..517f923 100644
--- a/engine/src/flutter/shell/platform/darwin/ios/framework/Source/FlutterPlatformViewsTest.mm
+++ b/engine/src/flutter/shell/platform/darwin/ios/framework/Source/FlutterPlatformViewsTest.mm

@@ -3287,8 +3287,9 @@
 
   BOOL shouldReAddDelayingRecognizer = NO;
   if (@available(iOS 26.0, *)) {
-    // TODO(hellohuanlin): find a solution for iOS 26,
-    // https://github.com/flutter/flutter/issues/175099.
+    // We use a different workaround for iOS 26 and it is tested separately.
+    // See:
+    // testFlutterPlatformViewBlockGestureUnderEagerPolicyShouldDisableAndReEnableTouchEventsGestureRecognizerForSimpleWebView.
   } else if (@available(iOS 18.2, *)) {
     shouldReAddDelayingRecognizer = YES;
   }
@@ -3486,7 +3487,9 @@
 
 - (void)
     testFlutterPlatformViewBlockGestureUnderEagerPolicyShouldDisableAndReEnableTouchEventsGestureRecognizerForSimpleWebView {
-  if (@available(iOS 26.0, *)) {
+  if (@available(iOS 26.4, *)) {
+    // Skip workaround as this non-tappable web view bug has been fixed on iOS 26.4.
+  } else if (@available(iOS 26.0, *)) {
     flutter::FlutterPlatformViewsTestMockPlatformViewDelegate mock_delegate;
 
     FlutterFMLTaskRunners* runners = CreateTestTaskRunners(self.name);
@@ -3597,7 +3600,9 @@
 
 - (void)
     testFlutterPlatformViewBlockGestureUnderEagerPolicyShouldDisableAndReEnableTouchEventsGestureRecognizerForMultipleWebViewInDifferentBranches {
-  if (@available(iOS 26.0, *)) {
+  if (@available(iOS 26.4, *)) {
+    // Skip workaround as this non-tappable web view bug has been fixed on iOS 26.4.
+  } else if (@available(iOS 26.0, *)) {
     flutter::FlutterPlatformViewsTestMockPlatformViewDelegate mock_delegate;
 
     FlutterFMLTaskRunners* runners = CreateTestTaskRunners(self.name);
@@ -3741,7 +3746,9 @@
 
 - (void)
     testFlutterPlatformViewBlockGestureUnderEagerPolicyShouldDisableAndReEnableTouchEventsGestureRecognizerForNestedMultipleWebView {
-  if (@available(iOS 26.0, *)) {
+  if (@available(iOS 26.4, *)) {
+    // Skip workaround as this non-tappable web view bug has been fixed on iOS 26.4.
+  } else if (@available(iOS 26.0, *)) {
     flutter::FlutterPlatformViewsTestMockPlatformViewDelegate mock_delegate;
 
     FlutterFMLTaskRunners* runners = CreateTestTaskRunners(self.name);