Style object with columns shorthand property wrong expansion

[pascalduez]

Do you want to request a feature or report a bug?

Report a bug.

What is the current behavior?

Adding a style object to an element with the columns shorthand property expand it the wrong way, it should be left untouched.

<div style={{ columns: 2 }}>

Expand to:

<div style="columns: auto 2px;">

Which is a totally different behaviour.
See: https://developer.mozilla.org/en-US/docs/Web/CSS/columns

If the current behavior is a bug, please provide the steps to reproduce and if possible a minimal demo of the problem via https://jsfiddle.net or similar (template: https://jsfiddle.net/84v837e9/).

https://codesandbox.io/s/YvYVjQZ9O

What is the expected behavior?

<div style="columns: 2;">

Which versions of React, and which browser / OS are affected by this issue? Did this work in previous versions of React?

Latest 15.6.1