stop number inputs to update value on scroll

src/App.tsx

@@ -10,6 +10,23 @@ function App() {
      *Cypress is waiting for this event to happen in onBeforeLoad callback in cypress/support/command.ts*/
     window.dispatchEvent(new CustomEvent('reactRenderComplete'));
   }, []);
+
+  /**
+   * This disables the default scroll wheel behavior on all number input fields.
+   * This effect applies globally to all number input fields in the document.
+   */
+  React.useEffect(() => {
+    const handleWheel = (event: MouseEvent) => {
+      if (document.activeElement && document.activeElement.getAttribute('type') === 'number') {
+        event.preventDefault();
+      }
+    };
+    document.addEventListener('wheel', handleWheel, { passive: false });
+    return () => {
+      document.removeEventListener('wheel', handleWheel);
+    };
+  }, []);
+
   return (
     <ConfigProvider>
       <StanCoreContext.Provider value={stanCore}>

tests/unit/components/forms/Input.spec.tsx

@@ -0,0 +1,42 @@
+import { cleanup, fireEvent, render } from '@testing-library/react';
+import FormikInput from '../../../../src/components/forms/Input';
+import React, { FC } from 'react';
+import { Form, FormikProvider, useFormik } from 'formik';
+import '@testing-library/jest-dom';
+
+afterEach(() => {
+  cleanup();
+});
+
+type FormikType = {
+  numberField: number;
+};
+
+const MockFormikInput: FC = () => {
+  const formik = useFormik<FormikType>({
+    initialValues: {
+      numberField: 2
+    },
+    onSubmit: jest.fn()
+  });
+
+  return (
+    <FormikProvider value={formik}>
+      <Form>
+        <FormikInput label="number field" type="number" name="numberField" />
+      </Form>
+    </FormikProvider>
+  );
+};
+
+describe('Formik Input', () => {
+  test('scroll wheel does not change value', () => {
+    const { getByLabelText } = render(<MockFormikInput />);
+    const numberInput = getByLabelText('number field');
+    expect(numberInput).toHaveValue(2);
+
+    fireEvent.scroll(numberInput, { target: { scrollTop: 200 } });
+
+    expect(numberInput).toHaveValue(2);
+  });
+});