Some functions (creation of channel, “Users and Team” setting page) are missing when Matterpost runs behind the proxy/load balancer Pound
Steps to reproduce
I am running Mattermost 4.9.0 in a Production Docker Setup. From within my network Mattermost is accessable via http://mm:8065. To connect it to the internet I use Pound, which forwards HTTP requests and responses to mm:8065. We have been using Pound for many many years with many different web applications without any problems to far.
From within my network I can create new channels and have the normal main menu. Unfortunately I am restricted to post one screenshot only.
When accessing Mattermost form the outside via the Pound proxy I only see a very limited menu and cannot create new channels:
Unfortunately I am restricted to post one screenshot only.
Does anyone know what the problem is? Ideas to investigate the problem further are also highly welcome.
The problem is similar to the one reported here in the forum: Unable to display Users and Groups