some users (2) not not create a direct message conversation to another user but they can chat in an DM that has been created by another user.
Steps to reproduce
I do not know how to recreate by others.
we are using MM Version: 3.5.0 (3.5.1) Database: postgres
We imported users etc from Slack.
user 1: chromebook: chrome / Firefox and Android
user 2: windows firefox, iphone
behaviour is on the browser and on the app.
users can search for other users in the field at the direct message part.
When clicking on the button to start DM with other user. nothing happens.
When another user starts the DM, then messaging to each other in the DM is no problem.
when user 1 is going to pre-release.mattermost.com this strange behavior is not present in the browsers.
click on the button and are able to send DM to a user
no error message. .Clicking the button does not give responce in app/web