TAB character rendered as "missing character" on CanvasKit and Windows #79153
Description
in canvaskit \t isn't rendered if it goes before some text
on windows it's not rendered at all
screenshots
(don't be confused, i consciously attached screenshots from platforms where it's working fine)
| android | ios | windows | macos |
|---|---|---|---|
 |
 |
 |
 |
| chrome_canvas_kit (windows) | chrome_html (windows) | chrome_canvas_kit (macos) | chrome_html (macos) |
 |
 |
 |
 |
code sample
import 'package:flutter/material.dart';
void main() => runApp(MyApp());
class MyApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
const title = 'code sample';
return MaterialApp(
title: title,
home: Scaffold(
appBar: AppBar(
title: Text(title),
),
body: Home(),
),
);
}
}
class Home extends StatelessWidget {
const Home({Key key}) : super(key: key);
@override
Widget build(BuildContext context) {
return Center(
child: Column(
mainAxisSize: MainAxisSize.min,
children: [
Text('\t\t\t Text \t\t\t'),
Text.rich(
TextSpan(
children: [
TextSpan(text: '\t\t\t'),
TextSpan(text: ' RichText '),
TextSpan(text: '\t\t\t'),
]
)
),
],
),
);
}
}
flutter doctor -v (windows)
[√] Flutter (Channel master, 2.1.0-13.0.pre.288, on Microsoft Windows [Version 10.0.19041.867], locale ru-RU)
• Flutter version 2.1.0-13.0.pre.288 at c:\dev\src\flutter
• Framework revision e384ca7979 (80 minutes ago), 2021-03-26 17:34:03 +0100
• Engine revision b5e15d055d
• Dart version 2.13.0 (build 2.13.0-162.0.dev)
[√] Android toolchain - develop for Android devices (Android SDK version 30.0.2)
• Android SDK at C:\Users\danya\AppData\Local\Android\sdk
• Platform android-30, build-tools 30.0.2
• Java binary at: C:\Program Files\Android\Android Studio\jre\bin\java
• Java version OpenJDK Runtime Environment (build 1.8.0_242-release-1644-b01)
• All Android licenses accepted.
[√] Chrome - develop for the web
• Chrome at C:\Program Files\Google\Chrome\Application\chrome.exe
[√] Visual Studio - develop for Windows (Visual Studio Community 2019 16.7.7)
• Visual Studio at C:\Program Files (x86)\Microsoft Visual Studio\2019\Community
• Visual Studio Community 2019 version 16.7.30621.155
• Windows 10 SDK version 10.0.18362.0
[√] Android Studio (version 4.0)
• Android Studio at C:\Program Files\Android\Android Studio
• Flutter plugin version 50.0.1
• Dart plugin version 193.7547
• Java version OpenJDK Runtime Environment (build 1.8.0_242-release-1644-b01)
[√] VS Code (version 1.54.3)
• VS Code at C:\Users\danya\AppData\Local\Programs\Microsoft VS Code
• Flutter extension version 3.20.0
[√] Connected device (4 available)
• Redmi Note 5 (mobile) • 40c9f14 • android-arm64 • Android 9 (API 28)
• Windows (desktop) • windows • windows-x64 • Microsoft Windows [Version 10.0.19041.867]
• Chrome (web) • chrome • web-javascript • Google Chrome 89.0.4389.90
• Edge (web) • edge • web-javascript • Microsoft Edge 89.0.774.57
• No issues found!
flutter doctor -v (macos)
[✓] Flutter (Channel master, 2.1.0-13.0.pre.288, on macOS 11.2.3 20D91 darwin-x64, locale ru-RU)
• Flutter version 2.1.0-13.0.pre.288 at /Users/danya/dev/src/flutter
• Framework revision e384ca7979 (78 minutes ago), 2021-03-26 17:34:03 +0100
• Engine revision b5e15d055d
• Dart version 2.13.0 (build 2.13.0-162.0.dev)
[✗] Android toolchain - develop for Android devices
✗ Unable to locate Android SDK.
Install Android Studio from: https://developer.android.com/studio/index.html
On first launch it will assist you in installing the Android SDK components.
(or visit https://flutter.dev/docs/get-started/install/macos#android-setup for detailed instructions).
If the Android SDK has been installed to a custom location, please use
`flutter config --android-sdk` to update to that location.
[✓] Xcode - develop for iOS and macOS
• Xcode at /Applications/Xcode.app/Contents/Developer
• Xcode 12.4, Build version 12D4e
• CocoaPods version 1.10.0
[✓] Chrome - develop for the web
• Chrome at /Applications/Google Chrome.app/Contents/MacOS/Google Chrome
[!] Android Studio (not installed)
• Android Studio not found; download from https://developer.android.com/studio/index.html
(or visit https://flutter.dev/docs/get-started/install/macos#android-setup for detailed instructions).
[✓] VS Code (version 1.54.1)
• VS Code at /Applications/Visual Studio Code.app/Contents
• Flutter extension version 3.20.0
[✓] Connected device (3 available)
• iPhone (mobile) • 86b0b059a5210f26163e88a385ca2c87c7fc5115 • ios • iOS 14.3
• macOS (desktop) • macos • darwin-x64 • macOS 11.2.3 20D91 darwin-x64
• Chrome (web) • chrome • web-javascript • Google Chrome 89.0.4389.90
! Doctor found issues in 2 categories.
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High-priority issues at the top of the work listText rendering, possibly libtxtCanvasKit (a.k.a. Skia-on-WebGL) rendering backend for Webflutter/engine related. See also e: labels.Found to occur in 3.0Found to occur in 3.1flutter/packages/flutter repository. See also f: labels.The issue has been confirmed reproducible and is ready to work onWeb applications specificallyBuilding on or for Windows specificallyIssue is closed as already fixed in a newer version