Android TextInput issue with Samsung Keyboard

[evollu]

Is this a bug report?

Yes

Have you read the Contributing Guidelines?

Yes

Environment

Environment:
OS: macOS Sierra 10.12.6
Node: 6.11.1
Yarn: 1.0.0
npm: 3.10.10
Watchman: 4.7.0
Xcode: Xcode 9.0 Build version 9A235
Android Studio: 2.3 AI-162.4069837

Packages: (wanted => installed)
react: ^16.0.0 => 16.0.0
react-native: ^0.49.1 => 0.49.1

Steps to Reproduce

(Write your steps here:)

1. Make sure using a Samsung phone with default Samsung Keyboard
2. Make sure Predictive feature is on for Samsung Keyboard
3. focus on text field and type 'aaa' (don't hit enter)
4. hit clear button to clear text
5. type 'a' again

Expected Behavior

New text should be just 'a'

(Write what you thought would happen.)

Actual Behavior

New text is 'aaaa'

(Write what happened. Add screenshots!)

Reproducible Demo

https://snack.expo.io/Sy1JgDH2Z

[evollu]

@nikolaiwarner has a temporary fix https://github.com/nikolaiwarner/react-native-text-input-reset

[evollu]

dup of #12462