Ant-design: form.setFields(Value) doesn't update the state in the calling component

You are right, I think it is a bug.

Do I use the form component correctly? Do you know if there is any workaround I could use?

When you modify the value of name, it will trigger onFieldsChange once, and then you use setFieldsValue to trigger onFieldsChange again. So, you this.setState twice, but the second time, you use the old state.

  handleFormChange = changedFields => {
-  this.setState({
-    fields: { ...this.state.fields, ...changedFields }
-  });
+  this.setState(({ fields }) => ({
+    fields: { ...fields, ...changedFields }
+  }));
  };

The sample in the documentation has this code:

 handleFormChange = (changedFields) => {
    this.setState({
      fields: { ...this.state.fields, ...changedFields },
    });
  }

I think the documentation should be updated to avoid further issues.

@pellea just PR to update docs, thanks.

@benjycui The project doesn't lint correctly and I can't commit the code.

git commit -n

I hope I did it right. This is my first PR ever :)