Recursive Data, Fetch and Lazy Components don't work together

[fabianwohlfart]

Describe the bug
If you have recursive data, get the data from nuxt/content, and one of your components is Lazy, the generated page will falsy append content.

To Reproduce
Sandbox: https://codesandbox.io/s/practical-glitter-sbt00?file=/components/Tree.vue
Child A (or B) contains a copy of what the page should hold, the other list-entry is empty

Expected behavior
If you remove Lazy everything is back to normal.

Additional context
Navigation to a page shows the correct content, while refreshing / loading the page will mess it up