[BUG] 4.5.0 Can't find LDAP users to add in rooms

[catalins95]

Description:

A fresh install , even the os, debian. After installing , I have managed to setup the LDAP auth, all good, users can loging, but in channels or rooms, when I try to add a new user, I cannot find him.
Same users who I can't find to add in a room, I can't add in all other rooms.
This bug applies only to several users, not to all of them.
When I try to write their CommonName or their username , the dropdown result from the search-box shows "empty" , meaning no result
Real example:
I have 30 users with cn(commonname) starting from A to Z, only letters.
When i go to a room-> add member-> search-box - it shows me the first 10 results , with the search-box empty, for example from name A to name M dropdown list, but after a search for a user whoose name starts with a letter after M, it shows empty as a result, even though the users exists.

Steps to reproduce:

1. Follow all the installation steps from rocket.chat guide, nothing else

Expected behavior:

I would have expected to add all the users I want

Actual behavior:

Cannot find all LDAP users authenticated.

Server Setup Information:

• Version of Rocket.Chat Server: 4.5.0
• Operating System: Debian 10.4
• Deployment Method: tar, npm i
• Number of Running Instances: 1
• DB Replicaset Oplog: -
• NodeJS Version: 14.18
• MongoDB Version: 5.0

Client Setup Information

• Desktop App or Browser Version: both methods, same bug
• Operating System: it doesn't matter the clients operating system

Relevant logs:

Lots of
{"level":50,"time":"2022-03-03T15:29:13.266Z","pid":1,"hostname":"f9c9770d540f","name":"","name":"LDAP","err":{"type":"Error","message":"User not found","stack":"Error: User not found\n at server/lib/ldap/Manager.ts:167:11\n at /app/bundle/programs/server/npm/node_modules/meteor/promise/node_modules/meteor-promise/fiber_pool.js:43:40"},"msg":"User not found"}

And "User not found" error when i try a LDAP search test on a 1st try, but the 2nd or 3rd is succesfull.

[catalins95]

Possible fix by #24328
I will try this fix monday......right now I am not at home....

If someone wants to try this before me, before monday 😄 ❤️