Description:

We have on-premise RC deployment with user created from corporate LDAP (Active Directory) where UserName it's a samaccuntname from LDAP and Name it's Surname Middle-name Name in LDAP
So we need to use option Admin UI - Layout - User Interface - User Real Name enabled, so our users can find each other by normal name or lastname.
After upgrade to 3.1.0 all user avatars in a sidebar was broken.
That because all user avatars are located in https://rc.company.com/avatar/username but after upgrade to 3.1.0 and with User Real Name enabled avatars are requested by https://rc.company.com/avatar/Surname Middle-name Name which is a obviously wrong URL.

Steps to reproduce:

1. Set User Real Name to true on pre 3.1.0 version
2. Set user avatard from LDAP
3. Upgrade to 3.1.0
4. No avatars in sidebar

Expected behavior:

Avatars should by requested by https://rc.company.com/avatar/username despite of User Real Name setting.

Actual behavior:

When User Real Name enabled

When User Real Name is disabled

Server Setup Information:

• Version of Rocket.Chat Server: 3.1.0
• Operating System: CentOS7
• Deployment Method: docker
• Number of Running Instances: 12
• DB Replicaset Oplog: Ebabled
• NodeJS Version: v12.16.1
• MongoDB Version: 4.0.16

Client Setup Information

• Desktop App or Browser Version: 2.17.9
• Operating System: Windows 10