ConversationsClassic/AppData/Store/ClientsStore.swift

@@ -105,6 +105,18 @@ extension ClientsStore {
     }
 }
 
+extension ClientsStore {
+    func addRosterForNewChatIfNeeded(_ chat: Chat) async throws {
+        let exists = try? await chat.fetchRoster()
+        if exists == nil {
+            guard let client = clients.first(where: { $0.credentials.bareJid == chat.account }) else {
+                throw AppError.clientNotFound
+            }
+            try await addRoster(client.credentials, contactJID: chat.participant, name: nil, groups: [])
+        }
+    }
+}
+
 // MARK: - Produce stores for conversation
 extension ClientsStore {
     func conversationStores(for roster: Roster) async throws -> (MessagesStore, AttachmentsStore) {

ConversationsClassic/View/Main/ChatList/ChatsListScreen.swift

@@ -60,6 +60,7 @@ private struct ChatsRow: View {
                     }
 
                     do {
+                        try? await clientsStore.addRosterForNewChatIfNeeded(chat)
                         let (messages, attachments) = try await clientsStore.conversationStores(for: chat)
                         router.showScreen(.push) { _ in
                             ConversationScreen(messagesStore: messages, attachments: attachments)