From 9a46b861499dc67f6d74ba536a34ffc6df9ae4b1 Mon Sep 17 00:00:00 2001
From: erikras-dinesh-agent <dinesh@openclaw.dev>
Date: Tue, 17 Feb 2026 04:32:53 +0100
Subject: [PATCH] Test: regression test for nested Field with validator
 infinite loop (#914)

---
 src/ReactFinalForm.test.js | 30 ++++++++++++++++++++++++++++++
 1 file changed, 30 insertions(+)

diff --git a/src/ReactFinalForm.test.js b/src/ReactFinalForm.test.js
index 5b6c575..b162bbb 100644
--- a/src/ReactFinalForm.test.js
+++ b/src/ReactFinalForm.test.js
@@ -991,3 +991,33 @@ describe("ReactFinalForm", () => {
     expect(getByTestId("password").value).toBe("f1nal-f0rm-RULEZ");
   });
 });
+
+describe("Issue #914 – nested Field with validator causing Maximum update depth", () => {
+  it("should not throw Maximum update depth exceeded when nesting Fields with validators", () => {
+    // https://github.com/final-form/react-final-form/issues/914
+    const required = (value) => (value ? undefined : "Required");
+
+    expect(() => {
+      render(
+        <Form onSubmit={onSubmitMock}>
+          {({ handleSubmit }) => (
+            <form onSubmit={handleSubmit}>
+              <Field name="outer" validate={required}>
+                {({ input }) => (
+                  <div>
+                    <input {...input} data-testid="outer" />
+                    <Field name="inner" validate={required}>
+                      {({ input: innerInput }) => (
+                        <input {...innerInput} data-testid="inner" />
+                      )}
+                    </Field>
+                  </div>
+                )}
+              </Field>
+            </form>
+          )}
+        </Form>,
+      );
+    }).not.toThrow();
+  });
+});