Nested List not working as expected, synthetic event returned for value instead of input value

[react-component]

Nested List not working as expected, synthetic event returned for value instead of input value

[rockie]

Encountered the same issue, synthetic event got returned in the intermediate level of the hierarchical value object. However, the leaf level values are correct.

:propertyOptions: Array(2) 0: {dispatchConfig: null, _targetInst: null, _dispatchListeners: null, _dispatchInstances: null, nativeEvent: null, …} 1: {dispatchConfig: null, _targetInst: null, _dispatchListeners: null, _dispatchInstances: null, nativeEvent: null, …}

Besides, there are a bunch of "Warning: This synthetic event is reused for performance reasons." shown while List item changed. The warning comes out of the setValue method of valueUtil.

More follow-up:
In the defaultGetValueFromEvent method, the synthetic event object is returned when event.target is null (which happens quite often in a form list) as shown below.

if (event && event.target && valuePropName in event.target) { return event.target[valuePropName]; } return event;

Not sure the exact reason why returns a synthetic event here in the end since a synthetic event will be recycled and not guaranteed safe to reference in an async way after dispatching.

[dobrynin]

+1 also experiencing this.