Are you submitting a bug report or a feature request?

bug report

What is the current behavior?

We get live bugsnag reports about focus/change/blur not being a function since our latest release:

TypeError P.blur is not a function
TypeError P.change is not a function
TypeError P.focus is not a function

Sadly, I don't know how our prod users achieve the error.
Looking into the prod source, the same places' breakpoints trigger on blur/change/focusing a react-final-form input.

Main change suspected that started to cause this:

-    "final-form": "^4.20.6",
-    "final-form-arrays": "^3.0.2",
+    "final-form": "^4.20.9",
+    "final-form-arrays": "^3.1.0",

Going through the changeset from 4.20.7 to 4.20.8, 33e551f caught my eye. It changed the blur/change/focus function handling and may not work in all cases.

What is the expected behavior?

Focus/Change/Blur should be a function if existing, and only be called if it's a function.

Sandbox Link

Sadly none.

What's your environment?

Browser: Current Chrome.

Our project is huge, but related to this project should be these dependencies:

"final-form": "^4.20.9",
"final-form-arrays": "^3.1.0",
"final-form-calculate": "^1.3.2",
"react": "^17.0.2",
"react-final-form": "^6.5.9",
"react-final-form-arrays": "^3.1.4",

Other information

Sorry for not providing more info outright, I'll try to provide what I can when asked.