Memoized Fields causes useFieldArray to put removed item back, once appended

[seleckis]

Here is my example: https://codesandbox.io/s/react-hook-form-usefieldarray-forked-6pjcdv?file=/src/index.js

1. Try to add a couple of records.
2. Remove one.
3. Append one more.

As a result, the removed items returns. But this happens only one time, after that items are removed and added as expected.

What's wrong with my code?

[tmnrp]

Seems like this issue asnwered ?
the code sanbox works fine according to me.

[seleckis]

Yes it works. I don't know why it wasn't.