TypeError: Cannot read property 'position' of undefined when using [tether] option

[mdekalka]

Do you want to request a feature or report a bug?
Bug
What is the current behavior?
Create a SimpleSelect component with tether option. Try to chose any item option - error TypeError: Cannot read property 'position' of undefined appears.

class TestSelect extends Component {
  state = {
    options: ["apple", "mango", "grapes", "melon", "strawberry"].map(fruit => ({ label: fruit, value: fruit }))
  }

  render() {
    return (
      <div style={{ border: '1px solid black', height: 200, overflow: "auto", padding: 20 }}>
       <div style={{ padding: 20 }}>
          Lorem ipsum dolor sit amet, consectetur adipiscing elit
       </div>

        <SimpleSelect
          options={this.state.options}
          placeholder="Select a fruit"
          theme="bootstrap3"
          hideResetButton
          tether={true}
          placeholder="Select a fruit"
          >
        </SimpleSelect>

       <div style={{ padding: 20 }}>
          Fusce aliquet dui tortor, imperdiet viverra augue pretium nec
       </div>
      </div>
    )
  }
}

If the current behavior is a bug, please provide the steps to reproduce and if possible a minimal demo of the problem:
Select SimpleSelect component and try to chose any option.
Demo issue: https://codesandbox.io/s/j26ojv34kw
Gif:

What is the expected behavior?
After choosing any option with enabled tether option - select should not throwing error.
Which versions of React, and which browser / OS are affected by this issue? Did this work in previous versions of React?
React 16.0.0
Note: This demo will work with React v.15.4.2+, but I catched few times this issue also, but can't create an always-reproduce code to test.
Chrome 63.0.3239.84 Win10
P.S. Seems the same issue #189, just create a more reliable ticket.

[nossila]

I confirm this is also happening to me with react 16.0.0 and react-selectize 3.0.1 using Chromium 64.0.3282.140

[ghost]

Does anybody work on fix for this issue?

I had a reply on danreeves/react-tether#62

[santiagoGuti]

if we change src/ReactTether.ls to be more defensive in line 60

something like
render new-props.children, @node, ~> @tether.position! if @tether.position

it might fix it (I am really bad with livescript, it might have an error)

@furqanZafar 🙏

[santiagoGuti]

I have fork and fix this issue in https://github.com/santiagoGuti/react-selectize, it is a temporal fix but it is better than nothing.