Is this a bug report?

Yes

Have you read the Contributing Guidelines?

Yes

Environment

1. react-native -v: react-native: 0.47.2
2. node -v: v8.4.0
3. npm -v: 5.4.1
4. yarn --version: 0.27.5

Then, specify:

• Target Platform:
  iOS

• Development Operating System:
  macOS

• Build tools:
  Atom

Steps to Reproduce

(Write your steps here:)

1. Write a flatlist, which will place elements side by side rather than one below other, using horizontal attribute.
2. Provide 3 or more values.

Expected Behavior

The list must scroll horizontally.

Actual Behavior

The app goes horribly unstable and the state keeps on refreshing (render method gets called again and again continuously).

Reproducible Demo

As you can see the logs, there are only 3 records, and the state, of the component, keeps refreshing and hence it does not work smoothly. If I remove horizontal attribute, everything goes fine.