Passing event.target causes Storybook to hang

[TheSisb]

I have a story that passes onFocus={action('Focused')}
The component is an input element with onFocus={this.onFocus}

onFocus = e => {
  this.props.onFocus && this.props.onFocus(e.target);  // App hangs.  'e' alone is fine.
};

[timoxley]

Can reproduce. I'm getting incredibly slow responses from action. Click handler takes about a second, and seems to be stuck stringifying an html element:

As a quick workaround I suggest the serializer should specifically ignore dom elements.

Why does it need to stringify at all?