Difficulty rendering for Testing Library test

**Describe the bug**
I am unable to render any nodes for the purpose of automated testing.

**To Reproduce**
https://codesandbox.io/s/basic-example-forked-rx85dd?file=/src/App.test.js

**Expected behavior**
Nodes should eventually render yet no amount of delay or async trickery in the test causes them to appear.

**Additional context**
https://testing-library.com/docs/react-testing-library/intro/ is quite common though there are plenty of other options. I know this repo has loads of tests for the underlying functionality but I did not see any e2e test from which to adapt my own test.

Thank you for creating this package. The level of detail is super impressive.

Reproduce the problem using the linked CodeSandbox and inspect src/App.test.js first. Compare the test setup with the React Testing Library introduction, then review this repository’s existing tests for a relevant example. Done means the nodes render reliably in the automated test without additional delay or async workarounds.

Written by the indexing model from the issue text.