react / react/react-native

[New Arch][Android] After turning on fabric, the text in the Xiaomi MIUI13 system is not fully displayed

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Issue: Author Provided Repro Newer Patch Available Platform: Android Type: New Architecture
Dominant language
C++
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Avg merge
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Merged PRs (30d)
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Description

Description

On Xiaomi MIUI13 system, when the font weight is changed and the fontWeight of the Text component is set to blod, the Text text will be truncated and wrapped;
If numberOfLines is set to 1, a different phenomenon will occur, causing the end of the text to become an ellipsis and incomplete display.

MIUI 14 seems to have problems as well, and other devices have not been tested.

This problem only occurs when a new architecture is enabled. There is no problem if newArchEnabled is set to false.

This is the system information:

Screenshot_20241218_191907

Set the thickness to maximum:

Screenshot_20241218_192042

Steps to reproduce
  1. Do not set numberOfLines, and the line will be truncated directly.
<View style={{
              paddingHorizontal: 12,
              marginHorizontal: 4,
              alignItems: "center",
              justifyContent: "center",
              height: 26
            }}>
              <Text style={{
                fontSize: 13,
                fontWeight: "bold",
                backgroundColor: 'red',
              }}>已取件(粗体),未设置了numberOfLines * 121221</Text>
            </View>

2、Set numberOfLines to 1, and an ellipsis appears at the end

<View style={{
              paddingHorizontal: 12,
              marginHorizontal: 4,
              alignItems: "center",
              justifyContent: "center",
              height: 26
            }}>
              <Text style={{
                fontSize: 13,
                fontWeight: "bold",
                backgroundColor: 'red',
              }} numberOfLines={1}>已取件(粗体),设置了numberOfLines=1 * 121221</Text>
            </View>
React Native Version

0.74.1

Affected Platforms

Runtime - Android

Areas

Fabric - The New Renderer

Output of npx react-native info
System:
  OS: macOS 13.4
  CPU: (10) arm64 Apple M2 Pro
  Memory: 123.03 MB / 16.00 GB
  Shell:
    version: "5.9"
    path: /bin/zsh
Binaries:
  Node:
    version: 18.0.0
    path: /usr/local/bin/node
  Yarn:
    version: 1.22.19
    path: /usr/local/bin/yarn
  npm:
    version: 8.6.0
    path: /usr/local/bin/npm
  Watchman:
    version: 2024.01.22.00
    path: /opt/homebrew/bin/watchman
Managers:
  CocoaPods:
    version: 1.12.1
    path: /Users/01400926/.rbenv/shims/pod
SDKs:
  iOS SDK:
    Platforms:
      - DriverKit 22.4
      - iOS 16.4
      - macOS 13.3
      - tvOS 16.4
      - watchOS 9.4
  Android SDK: Not Found
IDEs:
  Android Studio: 2022.3 AI-223.8836.35.2231.10671973
  Xcode:
    version: 14.3/14E222b
    path: /usr/bin/xcodebuild
Languages:
  Java:
    version: 17.0.13
    path: /usr/bin/javac
  Ruby:
    version: 3.2.2
    path: /Users/01400926/.rbenv/shims/ruby
npmPackages:
  "@react-native-community/cli": Not Found
  react:
    installed: 18.2.0
    wanted: 18.2.0
  react-native:
    installed: 0.74.1
    wanted: 0.74.1
  react-native-macos: Not Found
npmGlobalPackages:
  "*react-native*": Not Found
Android:
  hermesEnabled: true
  newArchEnabled: true
iOS:
  hermesEnabled: Not found
  newArchEnabled: false
Stacktrace or Logs
Reproducer

https://github.com/peaktan/fontDemo

Screenshots and Videos

code:

 <View style={{
              paddingHorizontal: 12,
              marginHorizontal: 4,
              alignItems: "center",
              justifyContent: "center",
              height: 26
            }}>
              <Text style={{
                fontSize: 13,
                fontWeight: "bold",
                backgroundColor: 'red',
              }}>已取件(粗体),未设置了numberOfLines * 121221</Text>
            </View>
            <View style={{
              paddingHorizontal: 12,
              marginHorizontal: 4,
              alignItems: "center",
              justifyContent: "center",
              height: 26
            }}>
              <Text style={{
                fontSize: 13,
                fontWeight: "bold",
                backgroundColor: 'red',
              }} numberOfLines={1}>已取件(粗体),设置了numberOfLines=1 * 121221</Text>
            </View>

result:

Screenshot_20241218_193516

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start with the linked fontDemo reproducer and run the two Text examples on Xiaomi MIUI 13 or 14 with newArchEnabled toggled. Compare bold text rendering with and without numberOfLines={1}; done means the text is neither truncated nor given an incomplete ellipsis under Fabric while existing behavior remains unchanged with the old architecture.

Written by the indexing model from the issue text.

Assessment

Tech stack
android, react-native
Domain
mobile
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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