RN 0.63.3 is adding some gray backgrounds in Android.

Description

Automatically after updating to RN 0.63.3 I had a problem with some gray colors in android (only Android, iOS works fine). It seems that some styles are being injected at some point in the build process, in addition, the logbox seems to be being modified as well (with same gray background). I can ensure that those styles are not being applied from the JavaScript code.

Any help can be useful. At the end you will find some screenshots.

React Native version:

System:
    OS: macOS 10.15.7
    CPU: (12) x64 Intel(R) Core(TM) i7-9750H CPU @ 2.60GHz
    Memory: 841.49 MB / 16.00 GB
    Shell: 3.2.57 - /bin/bash
  Binaries:
    Node: 14.13.1 - /usr/local/bin/node
    Yarn: 1.22.5 - /usr/local/bin/yarn
    npm: 6.14.8 - /usr/local/bin/npm
    Watchman: 4.9.0 - /usr/local/bin/watchman
  Managers:
    CocoaPods: 1.9.1 - /usr/local/bin/pod
  SDKs:
    iOS SDK:
      Platforms: iOS 14.1, DriverKit 19.0, macOS 10.15, tvOS 14.0, watchOS 7.0
    Android SDK:
      API Levels: 28, 29
      Build Tools: 28.0.3, 29.0.2
      System Images: android-28 | Intel x86 Atom_64, android-28 | Google APIs Intel x86 Atom, android-28 | Google Play Intel x86 Atom, android-29 | Intel x86 Atom_64, android-29 | Google APIs Intel x86 Atom, android-29 | Google APIs Intel x86 Atom_64, android-29 | Google Play Intel x86 Atom, android-30 | Google Play Intel x86 Atom, android-R | Google APIs Intel x86 Atom
      Android NDK: Not Found
  IDEs:
    Android Studio: 4.0 AI-193.6911.18.40.6626763
    Xcode: 12.1/12A7403 - /usr/bin/xcodebuild
  Languages:
    Java: 1.8.0_222 - /usr/bin/javac
    Python: 2.7.16 - /usr/bin/python
  npmPackages:
    @react-native-community/cli: Not Found
    react: 16.14.0 => 16.14.0 
    react-native: 0.63.3 => 0.63.3 
    react-native-macos: Not Found
  npmGlobalPackages:
    *react-native*: Not Found

Steps To Reproduce

1. Upgrade to React Native v0.63.3.
2. Run react-native start.
3. Run react-native run-android.

Expected Results

Colors should look right.

Snack, code example, screenshot, or link to a repository:

[devmartinez0]

@fervailanti have you found a solution? I am still stuck with this, I have tried several things and i can’t find what is causing this issue. I have another similar project and the colors are working fine on android (they both use the same react native version).

Maybe can you share with me the dependencies of your project to compare them with mine?

[fervailanti]

The problem is also related with ScrollView, if I remove the ScrollView component from a View the problem disappear for that View, but not using ScrollView is not an option.

Anyone has a solution for this?

The workaround i found for FlatList for now is with contentContainerStyle prop but not really scalable.