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[iOS] Text and TextInput clip descenders and add extra space below the selection with fontFamily "Hiragino Sans" #59842

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Description

@ryota0222

Description

When fontFamily: 'Hiragino Sans' is used on iOS, text layout height appears to be too small for the font's descenders:

  1. Single-line TextInput (both value and placeholder) clips descenders such as j, p, q, g, y at the bottom edge.
  2. Text clips descenders in the same way.
  3. In a multiline TextInput, the selection highlight extends well below the glyphs (each highlighted line is about 1.25x taller than with the system font).

None of these happen with the default system font (San Francisco).

This is a follow-up to #56123, which was closed automatically for missing version info. This report reproduces it on the latest stable release (0.88.1) with a reproducer based on the community template.

Steps to reproduce

  1. Clone the reproducer and run it on an iOS simulator (npm install, cd ios && bundle install && bundle exec pod install, npx react-native run-ios).
  2. The screen shows a single-line TextInput (value), a single-line TextInput (placeholder), a Text, and a focused multiline TextInput with all text selected, all using fontFamily: 'Hiragino Sans' and fontSize: 16.
  3. Observe that descenders are clipped in the single-line TextInputs and the Text, and that the selection highlight in the multiline TextInput extends below the glyphs.
  4. Tap "Switch to System" to compare with the default font. Neither problem occurs.

React Native Version

0.88.1

Affected Platforms

Runtime - iOS, Build - MacOS

Output of npx @react-native-community/cli info

System:
  OS: macOS 26.6.1
  CPU: (8) arm64 Apple M2
  Memory: 134.11 MB / 24.00 GB
  Shell:
    version: "5.9"
    path: /bin/zsh
Binaries:
  Node:
    version: 26.0.0
    path: /Users/matsumotoryouta/.anyenv/envs/nodenv/versions/26.0.0/bin/node
  Yarn:
    version: 1.22.22
    path: /Users/matsumotoryouta/.anyenv/envs/nodenv/versions/26.0.0/bin/yarn
  npm:
    version: 11.12.1
    path: /Users/matsumotoryouta/.anyenv/envs/nodenv/versions/26.0.0/bin/npm
  Watchman:
    version: 2024.06.24.00
    path: /opt/homebrew/bin/watchman
Managers:
  CocoaPods:
    version: 1.16.2
    path: /usr/local/bin/pod
SDKs:
  iOS SDK:
    Platforms:
      - DriverKit 25.5
      - iOS 26.5
      - macOS 26.5
      - tvOS 26.5
      - visionOS 26.5
      - watchOS 26.5
  Android SDK:
    API Levels:
      - "28"
      - "31"
      - "33"
      - "34"
      - "35"
      - "36"
    Build Tools:
      - 30.0.2
      - 30.0.3
      - 33.0.0
      - 33.0.1
      - 33.0.2
      - 34.0.0
      - 35.0.0
      - 36.0.0
    System Images:
      - android-31 | Google APIs ARM 64 v8a
      - android-33 | Google APIs ARM 64 v8a
      - android-34 | Google APIs ARM 64 v8a
      - android-36 | Google Play ARM 64 v8a
    Android NDK: Not Found
IDEs:
  Android Studio: 2022.2 AI-222.4459.24.2221.9862592
  Xcode:
    version: 26.6/17F113
    path: /usr/bin/xcodebuild
Languages:
  Java:
    version: 17.0.11
    path: /usr/bin/javac
  Ruby:
    version: 3.2.2
    path: /Users/matsumotoryouta/.anyenv/envs/rbenv/shims/ruby
npmPackages:
  "@react-native-community/cli":
    installed: 20.2.0
    wanted: 20.2.0
  react:
    installed: 19.3.0
    wanted: 19.3.0
  react-native:
    installed: 0.88.1
    wanted: 0.88.1
  react-native-macos: Not Found
npmGlobalPackages:
  "*react-native*": Not Found
Android:
  hermesEnabled: true
  newArchEnabled: true
iOS:
  hermesEnabled: true
  newArchEnabled: true

Stacktrace or Logs

N/A. This is a visual layout issue and no error or warning is logged.

MANDATORY Reproducer

https://github.com/ryota0222/rn-hiragino-repro

Screenshots and Videos

Tested on iPhone 15 Pro Max (iOS 18.1) and iPhone 17 Pro (iOS 26.5) simulators.

Hiragino Sans System font
Image Image
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