[0.57.4-0.57.8/0.58.6] using textTransform causes text to disappear on Android, but works on iOS

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• Search for existing issues: https://github.com/facebook/react-native/issues
• Use the latest React Native release: https://github.com/facebook/react-native/releases

Environment

  React Native Environment Info:
    System:
      OS: macOS High Sierra 10.13.6
      CPU: x64 Intel(R) Core(TM) i7-7567U CPU @ 3.50GHz
      Memory: 1.51 GB / 16.00 GB
      Shell: 2.7.1 - /usr/local/bin/fish
    Binaries:
      Node: 8.11.4 - /usr/local/bin/node
      Yarn: 1.9.4 - /usr/local/bin/yarn
      npm: 6.4.0 - /usr/local/bin/npm
      Watchman: 4.9.0 - /usr/local/bin/watchman
    SDKs:
      iOS SDK:
        Platforms: iOS 12.0, macOS 10.14, tvOS 12.0, watchOS 5.0
      Android SDK:
        Build Tools: 23.0.1, 23.0.3, 25.0.1, 25.0.2, 25.0.3, 26.0.0, 26.0.1, 26.0.2, 26.0.3, 27.0.3, 28.0.0
        API Levels: 17, 18, 19, 21, 22, 23, 25, 26, 27
    IDEs:
      Android Studio: 3.1 AI-173.4670197
      Xcode: 10.0/10A255 - /usr/bin/xcodebuild
    npmPackages:
      react: 16.6.0-alpha.8af6728 => 16.6.0-alpha.8af6728 
      react-native: 0.57.4 => 0.57.4 

Description

React Native 0.57.4 brings support for using textTransform style property on Android. When setting textTransform value to uppercase, lowercase or capitalize the text is not shown at all on Android, but is shown correctly on iOS.

If the textTransform property is removed, then the text renders normally.

This can be easily reproduced by creating a new React Native project and setting the textTransform property to one of the texts inside App.js.

Screenshots:

iOS simulator (iPhone 8 / iOS 12):

Android emulator (Nexus 5X / Android 5.0):

Android emulator (Nexus 5X / Android 8.0):

Reproducible Demo

Have a look at the demo that is a new 0.57.4 project with textTransform added to the welcome text. https://github.com/kristerkari/react-native-text-transform-issue/blob/master/App.js#L43

[estevaolucas]

I noticed something weird: If the text has some (any) emoji, the text appears.

[kristerkari]

Still reproducible with v0.58.1