Field custom component cannot be an inline lambda

[julienvincent]

I am wanting to use <Field /> with the following pattern:

<Field
  name="details.longName"
  component={({field, form}) => {
    return (
      <CustomInput
        {...field}
        onTextChange={value => form.setFieldValue(field.name, value)}
      />
    )
  }}
/>

However after each key-press within the input component, focus is lost. If I pull the wrapping ({field, form}) => { ... } out and make it a constant then everything works as expected.

Note the onTextChange prop in my example might make it seem like this is a react native component, I am experiencing this on web.

[julienvincent]

Taking a look at the source, it seems it can be easily remedied. I will submit a PR proposal.