Google Tag Manager event "History change" is no longer fired in Next.js 14.0.3

[manuelseisl]

Link to the code that reproduces this issue

https://github.com/manuelseisl/next-js-demo

To Reproduce

1. Change GTM ID in layout.jsx
2. Start application
3. Go to GTM preview mode
4. Navigate between pages

Current vs. Expected behavior

The Google Tag Manager event "History change" is no longer fired in Next.js 14.0.3.

Verify canary release

• I verified that the issue exists in the latest Next.js canary release

Provide environment information

Operating System:
  Platform: darwin
  Arch: arm64
  Version: Darwin Kernel Version 23.1.0: Mon Oct  9 21:28:45 PDT 2023; root:xnu-10002.41.9~6/RELEASE_ARM64_T6020
Binaries:
  Node: 20.10.0
  npm: 10.2.3
  Yarn: 1.22.19
  pnpm: 8.8.0
Relevant Packages:
  next: 14.0.3
  eslint-config-next: 14.0.3
  react: 18.2.0
  react-dom: 18.2.0
  typescript: 5.3.2
Next.js Config:
  output: N/A

Which area(s) are affected? (Select all that apply)

App Router, Routing (next/router, next/navigation, next/link)

Additional context

I tested my reproduction against different versions and canary releases, and the first one that introduced the bug was “14.0.3”, when switching back to “14.0.2” it works.

[vKongv]

I thought this was the default behavior when I first using Nextjs with 14.0.3. I added a template.tsx to trigger GTM track event manually :/

[cduff]

I just checked and this was breaking Google Tag Manager / Analytics for me. Rolling back to 14.0.2 fixes for now.

[Bart3kL]

@cduff @vKongv @manuelseisl Are you having trouble keeping track of all the pages? I use import { GoogleTagManager } from "@next/third-parties/google";
and for the page to appear in Google Analytics panel, I have to refresh page manually to see that someone has visited some page

[cduff]

@cduff @vKongv @manuelseisl Are you having trouble keeping track of all the pages? I use import { GoogleTagManager } from "@next/third-parties/google"; and for the page to appear in Google Analytics panel, I have to refresh page manually to see that someone has visited some page

@Bart3kL Do you have it set up to trigger on History Change? This is required due to hydration.

[Bart3kL]

@cduff Do you have it done somewhere and can you show it?

[vKongv]

@cduff @vKongv @manuelseisl Are you having trouble keeping track of all the pages? I use import { GoogleTagManager } from "@next/third-parties/google"; and for the page to appear in Google Analytics panel, I have to refresh page manually to see that someone has visited some page

@Bart3kL Do you have it set up to trigger on History Change? This is required due to hydration.

I did it in app/template.tsx like the doc said, thought it was a default behavior to do this until I see this issue

'use client';
import { useEffect } from 'react';
import { sendGTMEvent } from '@next/third-parties/google';

export default function Template({ children }: { children: React.ReactNode }) {
  const isProd = process.env.NODE_ENV === 'production';

  useEffect(() => {
    isProd && process.env.NEXT_PUBLIC_GTM_ID && sendGTMEvent({ event: 'page_view' });
  }, [isProd]);

  return <div>{children}</div>;
}

[philwolstenholme]

The GTM history change event should 'just work', but recently Next patched history pushState and replaceState, presumably causing this bug.

[cduff]

@cduff Do you have it done somewhere and can you show it?

@Bart3kL I just have GTM set up in the root layout like: https://nextjs.org/docs/app/building-your-application/optimizing/third-party-libraries#google-tag-manager

And the tag is configured like this:

[philwolstenholme]

This issue should be resolved by 8ff1368, I think. It'll be in the next non-canary release which I am guessing will be some time in the next week or two.

[cduff]

Fixed in 14.0.4 for me.

[oalexdoda]

Fixed on 14.0.4 but that version (and 14.0.5-canary) has a bug where all imports break.

And because of the complexity of the setup there's no way to add a minimal repro, so can't open an issue:

• 14.0.4 - Element type is invalid. Received a promise that resolves to: undefined. Lazy element type must resolve to a class or function. #59535
• Next.js 14.04 Error: Element type is invalid: expected a string (for built-in components) or a class/function (for composite components) but got: undefined #59386

Gonna be stuck on 14.0.3 for a while or revert to 14.0.2.

[benyaminl]

@vKongv Hello, I tried yours and use different variable for the useEffect, but seems it won't re-render between pages using Component, is there other thing that I need to set in order to re-render the Template.tsx on /app/template.tsx?

I only able to fire it using usePathName(), as the Template.tsx seems not rerendered or recalled

eg like in https://medium.com/@codingbeautytutorials/nextjs-detect-route-change-bb8e6c316d1

'use client';
import { useEffect } from 'react';
import { sendGTMEvent } from '@next/third-parties/google';
import { usePathname } from 'next/navigation';

export default function Template({ children }: { children: React.ReactNode }) {
  const isProd = usePathname();

  useEffect(() => {
    sendGTMEvent({ event: 'page_view', what: "huh" });
    console.log("Firing the page view", new Date(), window.location.pathname);
  }, [isProd]);
  
  return <>{children}</>;
}

I do look into the documentation that the state always not same each time we change to other page, but in this case seems it isn't, or I'm looking or interpret the docs and your answer wrongly?

Thank you

[dominicfallows]

I'm on 14.1.4 and noticed this still isn't working - that is I get no History Change trigger in GTM.

BTW, by following a similar app/template.tsx as discussed in this issue, I was able to trigger the GTM/GoogleTag/GA4 automatic collection of page data

app/template.tsx

"use client";
import { useEffect } from "react";
import { usePathname } from "next/navigation";

export default function Template({ children }: { children: React.ReactNode }) {
  const pathname = usePathname();

  useEffect(() => {
    if (window?.dataLayer) {
      if (process.env.NODE_ENV === "development") {
        console.log(`page_view`, window.location.href);
      }

      window.dataLayer.push({
        event: "page_view",
      });
    }
  }, [pathname]);

  return <>{children}</>;
}

GTM

[catlan]

I'm on 14.1.4 and noticed this still isn't working - that is I get no History Change trigger in GTM

Haven't retested with the latest version, but had to move the GoogleTagManager into head at some point for History Change trigger to work.

      <head>
        <GoogleTagManager gtmId="GTM-XXXXXXXX" />
      </head>

[HarveyPeachey]

14.2.3 doesn't seem to be working automatically for page views, even when following the docs.