Gatsby google tag and analytics disabled by unknown entity

[mkbctrl]

Hello,

I have recently noticed on my online production build the following issue:

Something is disabling the GA and adding extra GTM script. I use only one google related plugin (gatsby-plugin-gdpr-cookies), and I am surprised to see the gtm included twice. What's more important, when I make the production build locally (gatsby build + serve) those lines are not included:

Obviously, since it's undefined, it's not making any damage, but the presence itself is a little bit annoying.

At first I thought it might be the browser doing, but after testing FF, Chrome, Safari in both regular and incognito modes, I ruled this issue out.

Here is my gatsby-config file, maybe someone will notice anything that might be the cause of that behavior:

const path = require('path')
const pathFinder = require('./src/helpers/methods/gatsby')
require('dotenv').config({ path: `.env.${process.env.NODE_ENV}` })

module.exports = {
  flags: {
    PRESERVE_WEBPACK_CACHE: true,
    PRESERVE_FILE_DOWNLOAD_CACHE: true,
    FAST_REFRESH: true,
    DEV_SSR: false,
  },
  siteMetadata: {
    siteUrl: 'https://r.com',
    title: '...',
    description:
      '....',
    author: '@r',
    settings: {
      template: {
        caseStudy: {
          linkUp: {
            to: '/',
            title: 'Return to Homepage',
            label: 'Homepage',
          },
        },
      },
    },
  },
  plugins: [
    'gatsby-transformer-json',
    {
      resolve: 'gatsby-plugin-eslint',
      options: {
        test: /\.js$|\.jsx$|\.ts$|\.tsx$/,
        exclude: /(node_modules|.cache|public)/,
        stages: ['develop'],
        options: {
          emitWarning: true,
          failOnError: false,
        },
      },
    },
    {
      resolve: 'gatsby-plugin-gdpr-cookies',
      options: {
        googleTagManager: {
          trackingId: process.env.GATSBY_GOOGLE_TAG_MANAGER_CONTAINER_ID,
          routeChangeEventName: 'route-change',
        },
        environments: ['production'],
      },
    },
    'gatsby-plugin-react-helmet',
    {
      resolve: 'gatsby-source-filesystem',
      options: {
        name: 'images',
        path: `${__dirname}/src/images`,
      },
    },
    {
      resolve: 'gatsby-source-filesystem',
      options: {
        name: 'data',
        path: `${__dirname}/src/data/`,
      },
    },
    'gatsby-transformer-sharp',
    'gatsby-plugin-sharp',
    {
      resolve: 'gatsby-plugin-manifest',
      options: {
        name: 'r',
        short_name: 'r',
        start_url: '/',
        background_color: '#fff',
        theme_color: '#EF405B',
        display: 'minimal-ui',
        icon: 'src/images/icon.png', // This path is relative to the root of the site.
      },
    },
    'gatsby-plugin-styled-components',
    {
      resolve: 'gatsby-plugin-alias-imports',
      options: {
        alias: {
          '@components': path.resolve(__dirname, 'src/components/fragments'),
          '@constants': path.resolve(__dirname, 'src/constants'),
          '@features': path.resolve(__dirname, 'src/features'),
          '@pages': path.resolve(__dirname, 'src/components/pages'),
          '@templates': path.resolve(__dirname, 'src/components/templates'),
          '@fonts': path.resolve(__dirname, 'src/fonts'),
          '@helpers': path.resolve(__dirname, 'src/helpers'),
          '@images': path.resolve(__dirname, 'src/images'),
        },
      },
    },
    'gatsby-plugin-preload-fonts',
    'gatsby-plugin-smoothscroll',
    {
      resolve: 'gatsby-plugin-sitemap',
      options: {
        serialize: ({
          site: {
            siteMetadata: { siteUrl },
          },
          allSitePage,
        }) => {
          ....
        },
      },
    },
    'gatsby-plugin-remove-trailing-slashes',
    // this (optional) plugin enables Progressive Web App + Offline functionality
    // To learn more, visit: https://gatsby.dev/offline
    // `gatsby-plugin-offline`,
  ],
}