diff --git a/bitchat/BitchatApp.swift b/bitchat/BitchatApp.swift
index bb74a12a..644554b0 100644
--- a/bitchat/BitchatApp.swift
+++ b/bitchat/BitchatApp.swift
@@ -53,9 +53,10 @@ struct BitchatApp: App {
                     // Inject live Noise service into VerificationService to avoid creating new BLE instances
                     VerificationService.shared.configure(with: chatViewModel.meshService.getNoiseService())
                     // Prewarm Nostr identity and QR to make first VERIFY sheet fast
+                    let nickname = chatViewModel.nickname
                     DispatchQueue.global(qos: .utility).async {
                         let npub = try? idBridge.getCurrentNostrIdentity()?.npub
-                        _ = VerificationService.shared.buildMyQRString(nickname: chatViewModel.nickname, npub: npub)
+                        _ = VerificationService.shared.buildMyQRString(nickname: nickname, npub: npub)
                     }
 
                     appDelegate.chatViewModel = chatViewModel
diff --git a/bitchat/Views/ContentView.swift b/bitchat/Views/ContentView.swift
index 1a5ee44e..544befc7 100644
--- a/bitchat/Views/ContentView.swift
+++ b/bitchat/Views/ContentView.swift
@@ -465,17 +465,17 @@ struct ContentView: View {
                     } else {
                         // Schedule a delayed scroll
                         scrollThrottleTimer?.invalidate()
-                        scrollThrottleTimer = Timer.scheduledTimer(withTimeInterval: TransportConfig.uiScrollThrottleSeconds, repeats: false) { _ in
-                            lastScrollTime = Date()
-                        let contextKey: String = {
-                            switch locationManager.selectedChannel {
-                            case .mesh: return "mesh"
-                            case .location(let ch): return "geo:\(ch.geohash)"
-                            }
-                        }()
-                            let count = windowCountPublic
-                            let target = viewModel.messages.suffix(count).last.map { "\(contextKey)|\($0.id)" }
-                            DispatchQueue.main.async {
+                        scrollThrottleTimer = Timer.scheduledTimer(withTimeInterval: TransportConfig.uiScrollThrottleSeconds, repeats: false) { [weak viewModel] _ in
+                            Task { @MainActor in
+                                lastScrollTime = Date()
+                                let contextKey: String = {
+                                    switch locationManager.selectedChannel {
+                                    case .mesh: return "mesh"
+                                    case .location(let ch): return "geo:\(ch.geohash)"
+                                    }
+                                }()
+                                let count = windowCountPublic
+                                let target = viewModel?.messages.suffix(count).last.map { "\(contextKey)|\($0.id)" }
                                 if let target = target { proxy.scrollTo(target, anchor: .bottom) }
                             }
                         }
@@ -643,9 +643,11 @@ struct ContentView: View {
                 .frame(maxWidth: .infinity, alignment: .leading)
                 .onChange(of: messageText) { newValue in
                     autocompleteDebounceTimer?.invalidate()
-                    autocompleteDebounceTimer = Timer.scheduledTimer(withTimeInterval: 0.15, repeats: false) { _ in
+                    autocompleteDebounceTimer = Timer.scheduledTimer(withTimeInterval: 0.15, repeats: false) { [weak viewModel] _ in
                         let cursorPosition = newValue.count
-                        viewModel.updateAutocomplete(for: newValue, cursorPosition: cursorPosition)
+                        Task { @MainActor in
+                            viewModel?.updateAutocomplete(for: newValue, cursorPosition: cursorPosition)
+                        }
                     }
                 }