Can't mention user in large group chats

[quentin-mdn]

What did you do?

Trying to mention a user using @ then his name in large group chat (1000 members)

What did you expect to happen?

The name of the user that i'm trying to mention should appear but it does not when he is a member of the group

What happened instead?

His name doesnt show

GetStream Environment

GetStream Chat version:
GetStream Chat frameworks: StreamChat 4.81.0, StreamChatSwiftUI 4.81.0
iOS version: 18
Swift version: 6.1
Xcode version: 16.3
Device: Iphone SE3

Additional context

Seems related to the fact that the group chat has a lot of members because in smaller ones it works as expected

[testableapple]

Hi @quentin-mdn,

Thanks for opening a ticket. This is a missing feature parity between Stream UIKit and SwiftUI. StreamChatSwiftUI is still using an in-memory search only.
I cannot provide an ETA for a fix now, but we will update you when we take it into work.

Kind regards,
Alexey