CSRF token error on Android browsers

Infos:

  • Used Zammad version:
    5.1.x

  • Used Zammad installation type: (source, package, docker-compose, …)
    docker-compose

  • Operating system:
    Ubuntu 20.04

  • Browser + version:
    Firefox 101.2.0 on Android 10
    Chrome 102.0.5 on Android 10

Expected behavior:

  • Access login screen, log in successfully

Actual behavior:

  • Access login screen, return 'CSRF token verification failed!" error

Steps to reproduce the behavior:

  • As above

Login works on Firefox (Android version) and Chrome on ChromeOS.
Installation is proxied by nginx with SSL termination, Zammad is configured with HTTP type=http, nginx has proxy_set_header X-Forwarded-Proto https;

Firefox works on KDE. Need to test further on other OSes/DEs.