LDAP "Name Field" setting not working in message display after upgrade to 5.0.0

[Montg0mery]

Description:

LDAP "Name Field" setting not working after upgrade to 5.0.0.

Steps to reproduce:

1. Use LDAP
2. Set "Name Field" in LDAP settings to be "displayName", assuming that that field is populated with data in LDAP (which it is)
3. Observe that in messages in channels, users are shown by their username instead of by the LDAP displayName (which worked in version 4.8).

Settings:

Expected behavior:

See users shown by their real name not by their username in channel messages, e.g. "John Doe").

Actual behavior:

Username is shown instead (e.g. "john.doe").

Server Setup Information:

• Version of Rocket.Chat Server: 5.0.0
• Operating System: Ubuntu 20.04 LTS
• Deployment Method: Docker
• Number of Running Instances: 1
• DB Replicaset Oplog:
• NodeJS Version:
• MongoDB Version:

Client Setup Information

• Desktop App or Browser Version: Desktop App
• Operating System: Chrome browser

Additional context

This worked in 4.18.

The connection to LDAP itself is working fine, as authentication works. In the user list as an admin, I do see users' full names. But in chat messages, I just see usernames.

Relevant logs:

[Gummikavalier]

Hi! Not a long term solution but a possible workaround could be switching to use legacy message template at Administrator -> Settings -> Accounts -> Default User Preferences -> Use Legacy message template

Does switching it on or off help? (Requires refresh/reload of the browser session to activate.)