[🐛 Bug]: Can't change firefox language

[lacell75]

What happened?

I can't start selenium/node-firefox with french language. The language still set to en-us. I start the session with these below parameters:

    browserName: 'firefox',
    acceptInsecureCerts: true,
    'moz:firefoxOptions': {
      prefs: {
        'dom.ipc.processCount': 16,
        'browser.download.folderList': 2,
        'browser.download.dir': global.downloadDirFirefox,
        'browser.download.useDownloadDir': true,
        'browser.helperApps.neverAsk.saveToDisk':
          'application/vnd.ms-excel;application/vnd.openxmlformats-officedocument.spreadsheetml.sheet',
        'nglayout.initialpaint.delay': 0,
        'intl.accept_languages': 'fr,fr-FR',
        'intl.locale.requested': 'fr,fr-FR',
      },
      args: ['--width=1980', '--height=1080'],
    },

The parameters are correct in about:config but the browser language is in english instead of french

Command used to start Selenium Grid with Docker (or Kubernetes)

apiVersion: apps/v1
kind: Deployment
metadata:
  name: seleniumv4-node-firefox
  namespace: seleniumv4
  labels:
    app: seleniumv4-node-firefox
spec:
  replicas: 7
  selector:
    matchLabels:
      app: seleniumv4-node-firefox
  template:
    metadata:
      labels:
        app: seleniumv4-node-firefox
      annotations:
        cluster-autoscaler.kubernetes.io/safe-to-evict: "false"
    spec:
      affinity:
        nodeAffinity:
          requiredDuringSchedulingIgnoredDuringExecution:
            nodeSelectorTerms:
              - matchExpressions:
                  - key: kops.k8s.io/instancegroup
                    operator: In
                    values:
                      - nodes-spot-selenium
                  - key: awstype
                    operator: In
                    values:
                      - spot
      volumes:
        - name: dshm
          emptyDir:
            medium: Memory
        - name: tz-paris
          hostPath:
            path: /usr/share/zoneinfo/Europe/Paris
        - name: timezone
          configMap:
            name: seleniumv4-config
      containers:
        - name: seleniumv4-node-firefox
          image: selenium/node-firefox
          imagePullPolicy: Always
          ports:
            - containerPort: 5555
            - containerPort: 5900
            - containerPort: 7900
          volumeMounts:
            - mountPath: /dev/shm
              name: dshm
            - name: tz-paris
              mountPath: /etc/localtime
            - name: timezone
              mountPath: /etc/timezone
              subPath: timezone
          env:
            - name: SE_SCREEN_WIDTH
              value: "1920"
            - name: SE_SCREEN_HEIGHT
              value: "1080"
            - name: SE_SESSION_REQUEST_TIMEOUT
              value: "600"
            - name: SE_NODE_SESSION_TIMEOUT
              value: "300"
            - name: SE_NODE_MAX_SESSIONS
              value: "2"
            - name: SE_NODE_OVERRIDE_MAX_SESSIONS
              value: "true"
            - name: SE_NODE_GRID_URL
              value: "http://seleniumv4-hub:4444/"
            - name: SE_NODE_HOST
              valueFrom:
                fieldRef:
                  fieldPath: status.podIP
            - name: SE_NODE_PORT
              value: "5555"
            - name: SE_EVENT_BUS_HOST
              value: "seleniumv4-hub"
            - name: SE_EVENT_BUS_PUBLISH_PORT
              value: "4442"
            - name: SE_EVENT_BUS_SUBSCRIBE_PORT
              value: "4443"
            - name: TZ
              value: "Europe/Paris"
            - name: SE_OPTS
              value: ''
            - name: SE_JAVA_OPTS
              value: '-Dwebdriver.firefox.whitelistedIps=0.0.0.0 -Xms12g -Xmx12g -Duser.timezone=Europe/Paris'
            # - name: START_XVFB
            #   value: "false"
          resources:
            requests:
              memory: "13.5Gi"
              cpu: "3.5"
            limits:
              memory: "13.5Gi"

Relevant log output

no logs

Operating System

linux 5.15.0-1065-aws amd64

Docker Selenium version (image tag)

latest

Selenium Grid chart version (chart version)

4.23.1

[github-actions]

@lacell75, thank you for creating this issue. We will troubleshoot it as soon as we can.

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Thank you!

[VietND96]

Looks like the issue with geckodriver, similar to mozilla/geckodriver#2087

[github-actions]

This issue has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs.