Version

1.0.3

Reproduction link

https://codesandbox.io/s/interesting-water-y2j31

Steps to reproduce

Run the test

What is expected?

The two logs of innerHTML of the body should have a parent of div with an id of app.

What is actually happening?

It attached the component directly in the body.

I don't know why the wrapper div document was getting removed just before mounting the component.

I found that createElement works just fine but if do that outside mount, it will not work.

I checked the tests made on #1492 and it was passing because it didn't check whether it was really attached on the div wrapper. It was just checking if the root is null but I don't think it's the right behavior. Correct me if I'm wrong.