FastField doesn't set initial value with type="checkbox" and type="radio" with material-ui

[LeamonLee]

❓Question

Current Behavior
I'm trying to use FastField with material-ui to avoid unnecessary re-render. A checkbox's and a radio button's initial value are being set, but neither the checkbox nor the radio button display the correct initial status. The following code sandbox link shows that Field works but FastField doesn't. Is there something I miss?

Expected behavior
The checkbox and radio button are supposed to display correctly with corresponding initial value.

Reproducible example
https://codesandbox.io/s/focused-currying-83dbw?file=/src/App.js

Software	Version(s)
React	16.12
Formik	2.1.5
Material-ui	4.11.0
Browser	Chrome 84.0.4147.125

[LeamonLee]

I kinda figured out myself. The field that FastField provides doesn't contain 'checked' property, however, the regular Field does.
So my workaround is calculate the value of 'checked' property on my own.

[maddhruv]

Fixed with #2874

Try using the latest version