Broadcast messages don't show in admin console

Summary

With Firefox the broadcast messages in admin don't show any old (or current) messages, so it's impossible to edit, delete messages. It's working fine with chromium

Steps to reproduce

Go to admin interface, select “Messages”, add a message (if you don't have any). After that you can see no message list

What is the current bug behavior?

The message board list are empty.

What is the expected correct behavior?

The message board should show the list of messages.

Relevant logs and/or screenshots

Here a screenshot of the webdev tools of firefox, pretty sure it's the problem gitlab

Results of GitLab environment info

System information
System:         Debian 10
Current User:   git
Using RVM:      no
Ruby Version:   2.7.7p221
Gem Version:    3.1.6
Bundler Version:2.3.15
Rake Version:   13.0.6
Redis Version:  6.2.8
Sidekiq Version:6.5.7
Go Version:     unknown

GitLab information
Version:        15.8.0
Revision:       c052f86b6b4

Workaround

Use the Broadcast Messages API https://docs.gitlab.com/ee/api/broadcast_messages.html (as suggested #388926 (comment 1251076645))

Edited by Phil Calder