Text renders 1px bigger than View when explicitly given the same height with a specific combination of height and pixel ratio.

Description

Explicitly setting height: 15 on a parent View and child Text on a device with a pixel ratio of 3.5 (Pixel 7 Pro emulator) causes the child Text to render 1 px bigger than the parent View due to rounding in Yoga. When the Text is given a small border (borderWidth: 0.5) the bottom of the border is clipped by the parent View. This only happens with a certain offset from top - achieved for example by setting marginTop: 295.

There are several values and combinations of height and pixelRatio that give this result. I've only observed this on Fabric, on old architecture it renders the same.

Steps to reproduce

1. Enable new architecture
2. Use the following code:

const print_height = (layout: LayoutRectangle, component: string) => {
  const {height} = layout;
  console.log(`${component}'s height = ${height}`);
};

const TestApp = () => {
  return (
    <View
      style={styles.View}
      onLayout={event => print_height(event.nativeEvent.layout, 'View')}>
      <Text
        style={styles.Text}
        onLayout={event => print_height(event.nativeEvent.layout, 'Text')}>
        kkkkkkkk
      </Text>
    </View>
  );
};

const styles = StyleSheet.create({
  View: {
    justifyContent: 'center',
    alignItems: 'center',
    overflow: 'hidden',
    height: 15,
    marginTop: 295,
  },
  Text: {
    fontSize: 8,
    overflow: 'hidden',
    height: 15,
    borderWidth: 0.5,
    borderRadius: 4,
  },
});

3. Run on a device/emulator with pixelRatio: 3.5 (ex. Pixel 7 Pro)

React Native Version

0.73.1

Affected Platforms

Runtime - Android

Areas

Fabric - The New Renderer

Output of npx react-native info

System:
  OS: macOS 13.5.2
  CPU: (8) arm64 Apple M1 Pro
  Memory: 100.84 MB / 16.00 GB
  Shell:
    version: "5.9"
    path: /bin/zsh
Binaries:
  Node:
    version: 20.8.0
    path: /opt/homebrew/bin/node
  Yarn:
    version: 1.22.21
    path: /opt/homebrew/bin/yarn
  npm:
    version: 10.1.0
    path: /opt/homebrew/bin/npm
  Watchman:
    version: 2023.09.25.00
    path: /opt/homebrew/bin/watchman
Managers:
  CocoaPods: Not Found
SDKs:
  iOS SDK:
    Platforms:
      - DriverKit 23.2
      - iOS 17.2
      - macOS 14.2
      - tvOS 17.2
      - watchOS 10.2
  Android SDK: Not Found
IDEs:
  Android Studio: 2022.3 AI-223.8836.35.2231.10406996
  Xcode:
    version: 15.1/15C65
    path: /usr/bin/xcodebuild
Languages:
  Java:
    version: 17.0.6
    path: /usr/bin/javac
  Ruby:
    version: 3.2.2
    path: /opt/homebrew/opt/ruby/bin/ruby
npmPackages:
  "@react-native-community/cli": Not Found
  react:
    installed: 18.2.0
    wanted: 18.2.0
  react-native:
    installed: 0.73.1
    wanted: 0.73.1
  react-native-macos: Not Found
npmGlobalPackages:
  "*react-native*": Not Found
Android:
  hermesEnabled: true
  newArchEnabled: true
iOS:
  hermesEnabled: Not found
  newArchEnabled: false

Stacktrace or Logs

n\a

Reproducer

https://github.com/zglapa/reproducer_view_text_size

Screenshots and Videos

この issue ではリポジトリのファイルやテストが指定されていません。まず、Fabric を有効にし、ピクセル比 3.5 を使用する Android デバイスまたはエミュレーターで、リンクされた reproducer を実行します。次に、Fabric/Yoga パスにおけるレイアウトの丸め処理の挙動を追跡します。明示的に等しい View と Text の高さが等しいままになり、報告された再現で半ピクセルのボーダーがクリップされなければ完了です。