url is considered as new if only a hash was changed from previous url

packages/next/src/shared/lib/router/router.ts

@@ -2332,6 +2332,7 @@ export default class Router implements BaseRouter {
   }
 
   urlIsNew(asPath: string): boolean {
+    if (this.onlyAHashChange(asPath)) return true
     return this.asPath !== asPath
   }
 

test/e2e/app-dir/hash-navigation/app/page.tsx

@@ -0,0 +1,15 @@
+import Link from 'next/link'
+
+export default function Page() {
+  return (
+    <div style={{ paddingTop: '100px' }}>
+      <Link href="#section" id="link">
+        Go to section
+      </Link>
+
+      <div style={{ marginTop: '15000px' }} id="section">
+        <h1 style={{ color: 'black' }}>Section</h1>
+      </div>
+    </div>
+  )
+}

test/e2e/app-dir/hash-navigation/hash-navigation.test.ts

@@ -0,0 +1,28 @@
+import { nextTestSetup } from 'e2e-utils'
+
+describe('hash navigation', () => {
+  const { next, skipped } = nextTestSetup({
+    files: __dirname,
+  })
+
+  if (skipped) return
+
+  it('should scroll again when navigating to the same hash', async () => {
+    const browser = await next.browser('/')
+
+    // First click
+    await browser.elementByCss('#section').click()
+    const firstScroll = await browser.eval(() => window.scrollY)
+    expect(firstScroll).toBeGreaterThan(0)
+
+    // Scroll back to top
+    await browser.eval(() => window.scrollTo(0, 0))
+    const resetScroll = await browser.eval(() => window.scrollY)
+    expect(resetScroll).toBe(0)
+
+    // Second click
+    await browser.elementByCss('#section').click()
+    const secondScroll = await browser.eval(() => window.scrollY)
+    expect(secondScroll).toBeGreaterThan(0)
+  })
+})