CC @Tirokk @mattwr18 @appinteractive
Major breakthrough: If I remove `vue-portal` entirely from the
styleguide, problem solved. Not only that we can remove the TODOs from
the tests. Even wrappers of subcomponents get updated when I interact
with the root component. What a bliss 😂
Example code:
```js
let button = wrapper.find('div div div button')
expect(button.attributes()).toEqual({disabled: 'disabled'})
wrapper.doSomeAction()
expect(button.attributes()).toEqual({})
```
@Tirokk I think I could narrow down our problem to an additional call of
Wrapper(). The fact that we have to call it at least twice is a strong
indicator of non-atomic tests, which is bad.
