diff --git a/src/ResizableTextArea.tsx b/src/ResizableTextArea.tsx
index 595f455..c3f78b6 100644
--- a/src/ResizableTextArea.tsx
+++ b/src/ResizableTextArea.tsx
@@ -1,10 +1,10 @@
-import * as React from 'react';
+import classNames from 'classnames';
 import ResizeObserver from 'rc-resize-observer';
 import omit from 'rc-util/lib/omit';
-import classNames from 'classnames';
-import calculateNodeHeight from './calculateNodeHeight';
-import type { TextAreaProps } from '.';
+import * as React from 'react';
 import shallowEqual from 'shallowequal';
+import type { TextAreaProps } from '.';
+import calculateNodeHeight from './calculateNodeHeight';
 
 // eslint-disable-next-line @typescript-eslint/naming-convention
 enum RESIZE_STATUS {
@@ -93,7 +93,6 @@ class ResizableTextArea extends React.Component<TextAreaProps, TextAreaState> {
           this.setState({ resizeStatus: RESIZE_STATUS.RESIZED }, () => {
             this.resizeFrameId = requestAnimationFrame(() => {
               this.setState({ resizeStatus: RESIZE_STATUS.NONE });
-              this.fixFirefoxAutoScroll();
             });
           });
         });
@@ -106,21 +105,6 @@ class ResizableTextArea extends React.Component<TextAreaProps, TextAreaState> {
     cancelAnimationFrame(this.resizeFrameId);
   }
 
-  // https://github.com/ant-design/ant-design/issues/21870
-  fixFirefoxAutoScroll() {
-    try {
-      if (document.activeElement === this.textArea) {
-        const currentStart = this.textArea.selectionStart;
-        const currentEnd = this.textArea.selectionEnd;
-        this.textArea.setSelectionRange(currentStart, currentEnd);
-      }
-    } catch (e) {
-      // Fix error in Chrome:
-      // Failed to read the 'selectionStart' property from 'HTMLInputElement'
-      // http://stackoverflow.com/q/21177489/3040605
-    }
-  }
-
   renderTextArea = () => {
     const {
       prefixCls = 'rc-textarea',
diff --git a/tests/index.spec.js b/tests/index.spec.js
index 3fd5035..2d74751 100644
--- a/tests/index.spec.js
+++ b/tests/index.spec.js
@@ -1,10 +1,9 @@
-import React from 'react';
 import { mount } from 'enzyme';
 import TextArea from '../src';
-import { focusTest, sleep } from './utils';
 import calculateNodeHeight, {
   calculateNodeStyling,
 } from '../src/calculateNodeHeight';
+import { focusTest, sleep } from './utils';
 
 focusTest(TextArea);
 
@@ -239,18 +238,4 @@ describe('TextArea', () => {
       }),
     );
   });
-
-  it('scroll to bottom when autoSize', async () => {
-    const wrapper = mount(<TextArea autoSize />, { attachTo: document.body });
-    wrapper.find('textarea').simulate('focus');
-    wrapper.find('textarea').getDOMNode().focus();
-    const setSelectionRangeFn = jest.spyOn(
-      wrapper.find('textarea').getDOMNode(),
-      'setSelectionRange',
-    );
-    wrapper.find('textarea').simulate('change', { target: { value: '\n1' } });
-    await sleep(100);
-    expect(setSelectionRangeFn).toHaveBeenCalled();
-    wrapper.unmount();
-  });
 });