Form Input looses focus upon values validity change

[ThinhNguyenHoang]

Hello,
For some reason the form input loses focus when the field validity change (from Invalid to invalid and vice versa) . I don't know if this is the default behavior but it feels annoying as a user (require additional mouse click to re-enter the form) .

Code:
`import { Button, Space } from 'antd';
import React from 'react';
import * as Yup from 'yup'
import { Formik } from 'formik';
import { Form, FormItem, Input} from 'formik-antd';

const validationSchema = Yup.object({
test: Yup.string().required("required")
})
const TestPage = () => (
<>
<Formik onSubmit={(val) => console.log("values", val)} initialValues={{ test: "" }} validationSchema={validationSchema}>
{({ values }) => {
return

}}

</>

);
export default TestPage;`

Expected Result: The user can continue to input even when the field validity change

[elghst]

Sup! Check your chrome console for a warning that starts like this:
Warning: [antd: Input] When Input is focused, dynamic add or remove prefix / suffix will make it lose focus caused by dom structure change...
If so, the link in the message basically tells you to set default prefix/suffix (the element antd uses to render input validation) to your Input. I just left it blank, the problem is gone :
<Input name="password" placeholder="Password" suffix />

[andrii-muntian-p24]

Hello! Have similar issue here, but do not see any warning message like mentioned above by @elghst.
I think i might find reason for that. It is reproducible on latest for today antd@4.21.3 version but not reproduced on 4.1.0 which is set as dependency here in formik-antd codesandbox example.
It seems input is rerendered when validation error is displayed/hided.
Here is issue reproduced example on codesandbox.

How to reproduce:

• focus to inout
• click outside of input and see validation error.
• focus to input again
• type smth
• see validation error is gone and input is unfocused

How to fix:

• still looking for solution

[lscheibel]

@andrii-muntian-p24 This is an issue with antd but in your case adding hasFeedback={false} to the FormItem or adding showCount to the TextArea should fix the issue.