final-form / final-form/react-final-form
FormSpy onChange causes warning "Cannot update a component while rendering a different component"
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- JavaScript
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Description
### Are you submitting a **bug report** or a **feature request**?
Bug report
### Sandbox Link
https://codesandbox.io/s/final-form-spy-onchange-xxnem?file=/src/App.js
### What's your environment?
"final-form": "4.19.1",
"react": "16.13.1",
"react-final-form": "6.4.0",
A warning appears only during the first render.
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