Cannot disable form submission using onSubmit handler

[patsissons]

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

What is the current behavior?
it is not currently possible to prevent form submission using the onSubmit handler

If the current behavior is a bug, please provide the steps to reproduce and if possible a minimal demo of the problem.
sample code at https://codesandbox.io/s/jpx80rj6vy

What is the expected behavior?
form should never submit because onSubmit returns false every time

Which versions of React, and which browser / OS are affected by this issue? Did this work in previous versions of React?
React 16

simplified code snippet below so you don't have to load the sandbox repro

<form onSubmit={() => false}>
  <input type="text" name="bar" placeholder="type and hit enter" />
</form>

[bonusrk]

Doesn't e.preventDefault() make this job?

<form onSubmit={e => e.preventDefault()}>
  <input type="text" name="bar" placeholder="type and hit enter" />
</form>

[gaearon]

The answer above is correct. React does not support returning false from event handlers for this purpose. Please be explicit about what you're trying to do (stop propagation, prevent default, or both).

[samuelscheit]

I have the same issue and made a Codepen for a minimal demo of the problem:
https://codepen.io/Flam3rboy/pen/JjXpOEd

The problem occurs if you try to submit a form over a ref

this.form.current.submit();