Original report from @daramousk.
Does anyone in the community have thoughts on this question? Have this been reproduced by others?
Messages not getting received when I connect to a VPN
Steps to reproduce
Connect to a VPN on Ubuntu 16.04, if messages are sent on Mattermost you will not be able to receive them. If you click refresh though you will be able to receive them normally and the functionality gets restored.
This issue occurs when using the browser and the native application