I'm not sure why but https://github.com/facebook/react/pull/10156 seems to have caused issues in production with us. We'll need to either revert or find a way to fix forward. Right now master is broken, and if we sync again before fixing, we'll break things.
/**
 * Copyright 2013-present, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule inputValueTracking
 * @flow
 */
'use strict';
var {ELEMENT_NODE} = require('HTMLNodeType');
import type {Fiber} from 'ReactFiber';
import type {ReactInstance} from 'ReactInstanceType';
type ValueTracker = {
  getValue(): string,
  setValue(value: string): void,
  stopTracking(): void,
};
type WrapperState = {_wrapperState: {valueTracker: ?ValueTracker}};
type ElementWithWrapperState = Element & WrapperState;
type InstanceWithWrapperState = ReactInstance & WrapperState;
type SubjectWithWrapperState =
  | InstanceWithWrapperState
  | ElementWithWrapperState;
var ReactDOMComponentTree = require('ReactDOMComponentTree');
function isCheckable(elem: any) {