SectionList throws Warning that is only for FlatList when using flexWrap

Is this a bug report?

yes

Have you read the Contributing Guidelines?

yes

Environment

Environment: OS: macOS High Sierra 10.13.2 Node: 9.3.0 Yarn: 1.3.2 npm: 5.6.0 Watchman: 4.9.0 Xcode: Xcode 9.2 Build version 9C40b Android Studio: 3.0 AI-171.4408382

Packages: (wanted => installed) react: 16.0.0 => 16.0.0 react-native: 0.50.4 => 0.50.4

Target Platform: iOS (11.2)

Steps to Reproduce

put flexWrap on the contentContainerStyle of a SectionList:

<SectionList 
    contentContainerStyle= {{
        flexWrap: 'wrap',
        flexDirection: 'row',
    }}
    ....
/>

Expected Behavior

It should either display an error/warning message that says that SectionList doesn’t support flexWrap or just work.

Actual Behavior

It seems to work but shows a warning:

Warning: `flexWrap: `wrap`` is not supported with the `VirtualizedList` components.Consider using `numColumns` with `FlatList` instead.

The warning originates here: https://github.com/facebook/react-native/blob/a8391bde7d757d01521a6d12170fb9090c17a6a0/Libraries/Lists/VirtualizedList.js#L720

A warning from VirtualizedList shouldn’t refer to FlatList. This issue has been reported before in #15772 and #13460. People suggest that using flexWrap works fine for them, so probably the warning should be removed. Otherwise, the warning should be thrown from SectionList and not refer to FlatList, since SectionList doesn’t have a numColumns prop.

Reproducible Demo

https://snack.expo.io/rkNQldQEM

[MrLoh]

This is still a problem. I marked the line in the source code that causes it. This bot gets more aggressive every time.

[MrLoh]

Reopened in new issue #18079