[webview_flutter] Multiple WebViews on the screen are flickering on iphone 13 pro 120hz display #99151
Description
Details
Hey! 👋 I am using few WebViews as a rows in ListView widget, I know that WebView is pretty expensive widget but I found out such an interesting case when using/testing WebViews (can be blank no matter what's inside) in ListView. It causes flickering of whole interface. There are some issues with similar behaviour but not exactly the same. I am on Flutter 2.10.1 (Stable)
It is happening for me only on 120hz screen of iPhone 13 Pro. Couldn't reproduce it on simulator.
Target Platform: iOS
Target OS version/browser: 15.3.1
Devices:iPhone 13 Pro
webview_flutter: ^3.0.1
Screen recording
RPReplay_Final1645794871.2.mov
Reproduce code
import 'package:flutter/material.dart';
import 'package:webview_flutter/webview_flutter.dart';
void main() {
runApp(const MyApp());
}
class MyApp extends StatelessWidget {
const MyApp({Key? key}) : super(key: key);
// This widget is the root of your application.
@override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Flutter Demo',
theme: ThemeData(
primarySwatch: Colors.blue,
),
home: const MyHomePage(),
);
}
}
class MyHomePage extends StatefulWidget {
const MyHomePage({Key? key}) : super(key: key);
@override
State<MyHomePage> createState() => _MyHomePageState();
}
class _MyHomePageState extends State<MyHomePage> {
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: const Text('Test app'),
),
body: Center(
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: [
Expanded(
child: ListView.builder(
itemCount: 20,
itemBuilder: ((context, index) {
return Container(
margin: const EdgeInsets.all(10),
height: 200,
child: const WebView(
initialUrl: 'https://flutter.dev',
),
);
}),
),
),
],
),
),
);
}
}Logs
Logs
After running flutter run --profile --trace-skia
[assertion] Error acquiring assertion: <Error Domain=RBSServiceErrorDomain Code=1 "target is not running or doesn't have entitlement com.apple.runningboard.assertions.webkit" UserInfo={NSLocalizedFailureReason=target is not running or doesn't have entitlement com.apple.runningboard.assertions.webkit}>
[ProcessSuspension] 0x110f14f00 - ProcessAssertion: Failed to acquire RBS assertion 'ConnectionTerminationWatchdog' for process with PID=3132, error: Error Domain=RBSServiceErrorDomain Code=1 "target is not running or doesn't have entitlement com.apple.runningboard.assertions.webkit" UserInfo={NSLocalizedFailureReason=target is not running or doesn't have entitlement com.apple.runningboard.assertions.webkit}
[assertion] Error acquiring assertion: <Error Domain=RBSServiceErrorDomain Code=1 "target is not running or doesn't have entitlement com.apple.runningboard.assertions.webkit" UserInfo={NSLocalizedFailureReason=target is not running or doesn't have entitlement com.apple.runningboard.assertions.webkit}>
[ProcessSuspension] 0x110f140c0 - ProcessAssertion: Failed to acquire RBS assertion 'ConnectionTerminationWatchdog' for process with PID=3138, error: Error Domain=RBSServiceErrorDomain Code=1 "target is not running or doesn't have entitlement com.apple.runningboard.assertions.webkit" UserInfo={NSLocalizedFailureReason=target is not running or doesn't have entitlement com.apple.runningboard.assertions.webkit}
[assertion] Error acquiring assertion: <Error Domain=RBSServiceErrorDomain Code=1 "target is not running or doesn't have entitlement com.apple.runningboard.assertions.webkit" UserInfo={NSLocalizedFailureReason=target is not running or doesn't have entitlement com.apple.runningboard.assertions.webkit}>
[ProcessSuspension] 0x110f14d20 - ProcessAssertion: Failed to acquire RBS assertion 'ConnectionTerminationWatchdog' for process with PID=3139, error: Error Domain=RBSServiceErrorDomain Code=1 "target is not running or doesn't have entitlement com.apple.runningboard.assertions.webkit" UserInfo={NSLocalizedFailureReason=target is not running or doesn't have entitlement com.apple.runningboard.assertions.webkit}
[assertion] Error acquiring assertion: <Error Domain=RBSServiceErrorDomain Code=1 "target is not running or doesn't have entitlement com.apple.runningboard.assertions.webkit" UserInfo={NSLocalizedFailureReason=target is not running or doesn't have entitlement com.apple.runningboard.assertions.webkit}>
[ProcessSuspension] 0x110f14720 - ProcessAssertion: Failed to acquire RBS assertion 'ConnectionTerminationWatchdog' for process with PID=3140, error: Error Domain=RBSServiceErrorDomain Code=1 "target is not running or doesn't have entitlement com.apple.runningboard.assertions.webkit" UserInfo={NSLocalizedFailureReason=target is not running or doesn't have entitlement com.apple.runningboard.assertions.webkit}
Could not signal service com.apple.WebKit.WebContent: 113: Could not find specified service
Could not signal service com.apple.WebKit.WebContent: 113: Could not find specified service
Could not signal service com.apple.WebKit.WebContent: 113: Could not find specified service
Could not signal service com.apple.WebKit.WebContent: 113: Could not find specified service
Could not signal service com.apple.WebKit.WebContent: 113: Could not find specified service
Could not signal service com.apple.WebKit.WebContent: 113: Could not find specified service
Could not signal service com.apple.WebKit.WebContent: 113: Could not find specified service
Could not signal service com.apple.WebKit.WebContent: 113: Could not find specified service
Could not signal service com.apple.WebKit.WebContent: 113: Could not find specified service
Could not signal service com.apple.WebKit.WebContent: 113: Could not find specified service
Could not signal service com.apple.WebKit.WebContent: 113: Could not find specified service
Could not signal service com.apple.WebKit.WebContent: 113: Could not find specified service
Could not signal service com.apple.WebKit.WebContent: 113: Could not find specified service
Could not signal service com.apple.WebKit.WebContent: 113: Could not find specified service
Could not signal service com.apple.WebKit.WebContent: 113: Could not find specified service
Could not signal service com.apple.WebKit.WebContent: 113: Could not find specified service
Could not signal service com.apple.WebKit.WebContent: 113: Could not find specified service
Could not signal service com.apple.WebKit.WebContent: 113: Could not find specified service
Could not signal service com.apple.WebKit.WebContent: 113: Could not find specified service
Could not signal service com.apple.WebKit.WebContent: 113: Could not find specified service
Could not signal service com.apple.WebKit.WebContent: 113: Could not find specified service
Could not signal service com.apple.WebKit.WebContent: 113: Could not find specified service
Could not signal service com.apple.WebKit.WebContent: 113: Could not find specified service
Could not signal service com.apple.WebKit.WebContent: 113: Could not find specified service
Could not signal service com.apple.WebKit.WebContent: 113: Could not find specified service
[assertion] Error acquiring assertion: <Error Domain=RBSServiceErrorDomain Code=1 "target is not running or doesn't have entitlement com.apple.runningboard.assertions.webkit" UserInfo={NSLocalizedFailureReason=target is not running or doesn't have entitlement com.apple.runningboard.assertions.webkit}>
[ProcessSuspension] 0x10aef8360 - ProcessAssertion: Failed to acquire RBS assertion 'ConnectionTerminationWatchdog' for process with PID=3145, error: Error Domain=RBSServiceErrorDomain Code=1 "target is not running or doesn't have entitlement com.apple.runningboard.assertions.webkit" UserInfo={NSLocalizedFailureReason=target is not running or doesn't have entitlement com.apple.runningboard.assertions.webkit}
[assertion] Error acquiring assertion: <Error Domain=RBSServiceErrorDomain Code=1 "target is not running or doesn't have entitlement com.apple.runningboard.assertions.webkit" UserInfo={NSLocalizedFailureReason=target is not running or doesn't have entitlement com.apple.runningboard.assertions.webkit}>
[ProcessSuspension] 0x110f148a0 - ProcessAssertion: Failed to acquire RBS assertion 'ConnectionTerminationWatchdog' for process with PID=3144, error: Error Domain=RBSServiceErrorDomain Code=1 "target is not running or doesn't have entitlement com.apple.runningboard.assertions.webkit" UserInfo={NSLocalizedFailureReason=target is not running or doesn't have entitlement com.apple.runningboard.assertions.webkit}
[assertion] Error acquiring assertion: <Error Domain=RBSServiceErrorDomain Code=1 "target is not running or doesn't have entitlement com.apple.runningboard.assertions.webkit" UserInfo={NSLocalizedFailureReason=target is not running or doesn't have entitlement com.apple.runningboard.assertions.webkit}>
[ProcessSuspension] 0x10aef82a0 - ProcessAssertion: Failed to acquire RBS assertion 'ConnectionTerminationWatchdog' for process with PID=3143, error: Error Domain=RBSServiceErrorDomain Code=1 "target is not running or doesn't have entitlement com.apple.runningboard.assertions.webkit" UserInfo={NSLocalizedFailureReason=target is not running or doesn't have entitlement com.apple.runningboard.assertions.webkit}
[assertion] Error acquiring assertion: <Error Domain=RBSServiceErrorDomain Code=1 "target is not running or doesn't have entitlement com.apple.runningboard.assertions.webkit" UserInfo={NSLocalizedFailureReason=target is not running or doesn't have entitlement com.apple.runningboard.assertions.webkit}>
[ProcessSuspension] 0x10aef93e0 - ProcessAssertion: Failed to acquire RBS assertion 'ConnectionTerminationWatchdog' for process with PID=3150, error: Error Domain=RBSServiceErrorDomain Code=1 "target is not running or doesn't have entitlement com.apple.runningboard.assertions.webkit" UserInfo={NSLocalizedFailureReason=target is not running or doesn't have entitlement com.apple.runningboard.assertions.webkit}
[assertion] Error acquiring assertion: <Error Domain=RBSServiceErrorDomain Code=1 "target is not running or doesn't have entitlement com.apple.runningboard.assertions.webkit" UserInfo={NSLocalizedFailureReason=target is not running or doesn't have entitlement com.apple.runningboard.assertions.webkit}>
[ProcessSuspension] 0x110f15380 - ProcessAssertion: Failed to acquire RBS assertion 'ConnectionTerminationWatchdog' for process with PID=3149, error: Error Domain=RBSServiceErrorDomain Code=1 "target is not running or doesn't have entitlement com.apple.runningboard.assertions.webkit" UserInfo={NSLocalizedFailureReason=target is not running or doesn't have entitlement com.apple.runningboard.assertions.webkit}
[assertion] Error acquiring assertion: <Error Domain=RBSServiceErrorDomain Code=1 "target is not running or doesn't have entitlement com.apple.runningboard.assertions.webkit" UserInfo={NSLocalizedFailureReason=target is not running or doesn't have entitlement com.apple.runningboard.assertions.webkit}>
[ProcessSuspension] 0x110f144e0 - ProcessAssertion: Failed to acquire RBS assertion 'ConnectionTerminationWatchdog' for process with PID=3148, error: Error Domain=RBSServiceErrorDomain Code=1 "target is not running or doesn't have entitlement com.apple.runningboard.assertions.webkit" UserInfo={NSLocalizedFailureReason=target is not running or doesn't have entitlement com.apple.runningboard.assertions.webkit}
[assertion] Error acquiring assertion: <Error Domain=RBSAssertionErrorDomain Code=2 "Specified target process does not exist" UserInfo={NSLocalizedFailureReason=Specified target process does not exist}>
[ProcessSuspension] 0x10aef9200 - ProcessAssertion: Failed to acquire RBS assertion 'ConnectionTerminationWatchdog' for process with PID=3146, error: Error Domain=RBSAssertionErrorDomain Code=2 "Specified target process does not exist" UserInfo={NSLocalizedFailureReason=Specified target process does not exist}
Could not signal service com.apple.WebKit.WebContent: 113: Could not find specified service
Could not signal service com.apple.WebKit.WebContent: 113: Could not find specified service
Could not signal service com.apple.WebKit.WebContent: 113: Could not find specified service
Could not signal service com.apple.WebKit.WebContent: 113: Could not find specified service
Could not signal service com.apple.WebKit.WebContent: 113: Could not find specified service
Could not signal service com.apple.WebKit.WebContent: 113: Could not find specified service
Could not signal service com.apple.WebKit.WebContent: 113: Could not find specified service
Could not signal service com.apple.WebKit.WebContent: 113: Could not find specified service
Could not signal service com.apple.WebKit.WebContent: 113: Could not find specified service
Could not signal service com.apple.WebKit.WebContent: 113: Could not find specified service
Could not signal service com.apple.WebKit.WebContent: 113: Could not find specified service
Flutter Doctor
[✓] Flutter (Channel stable, 2.10.1, on macOS 12.0.1 21A559 darwin-arm, locale en-PL)
• Flutter version 2.10.1 at /Users/piotrmoskala/Developer/flutter
• Upstream repository https://github.com/flutter/flutter.git
• Framework revision db747aa133 (2 weeks ago), 2022-02-09 13:57:35 -0600
• Engine revision ab46186b24
• Dart version 2.16.1
• DevTools version 2.9.2
[✓] Android toolchain - develop for Android devices (Android SDK version 32.0.0)
• Android SDK at /Users/piotrmoskala/Library/Android/sdk
• Platform android-32, build-tools 32.0.0
• Java binary at: /Applications/Android Studio.app/Contents/jre/Contents/Home/bin/java
• Java version OpenJDK Runtime Environment (build 11.0.10+0-b96-7249189)
• All Android licenses accepted.
[✓] Xcode - develop for iOS and macOS (Xcode 13.2.1)
• Xcode at /Applications/Xcode.app/Contents/Developer
• CocoaPods version 1.11.2
[✓] Chrome - develop for the web
• Chrome at /Applications/Google Chrome.app/Contents/MacOS/Google Chrome
[✓] Android Studio (version 2020.3)
• Android Studio at /Applications/Android Studio.app/Contents
• Flutter plugin can be installed from:
🔨 https://plugins.jetbrains.com/plugin/9212-flutter
• Dart plugin can be installed from:
🔨 https://plugins.jetbrains.com/plugin/6351-dart
• Java version OpenJDK Runtime Environment (build 11.0.10+0-b96-7249189)
[✓] VS Code (version 1.64.2)
• VS Code at /Applications/Visual Studio Code.app/Contents
• Flutter extension version 3.34.0
[✓] Connected device (3 available)
• Piotr’s iPhone (mobile) • 00008110-00144C1E2269801E • ios • iOS 15.1.1 19B81
• iPad mini (6th generation) (mobile) • 5C51AC4C-C318-404F-95CD-8A39B868F95B • ios • com.apple.CoreSimulator.SimRuntime.iOS-15-2 (simulator)
• Chrome (web) • chrome • web-javascript • Google Chrome 98.0.4758.109
[✓] HTTP Host Availability
• All required HTTP hosts are available
• No issues found!