diff --git a/NucleicRemote/NucleicRemote/Models/RemoteStore.swift b/NucleicRemote/NucleicRemote/Models/RemoteStore.swift
index cfe8834..97e1d0e 100644
--- a/NucleicRemote/NucleicRemote/Models/RemoteStore.swift
+++ b/NucleicRemote/NucleicRemote/Models/RemoteStore.swift
@@ -477,7 +477,10 @@ final class RemoteStore: ObservableObject {
         }
         cb.openSnapshot = { [weak self] snap in
             guard let self, hostID == self.openSessionHostID, snap.summary.sessionID == self.openSessionID else { return }
-            self.openEvents = snap.recentEvents
+            // Merge, don't replace: a fresh open merges into an empty transcript (the tail window),
+            // while a reconnect's warm-resubscribe delta appends to the history already on screen
+            // instead of truncating it to the host's 200-event tail.
+            self.openEvents = Self.mergedEvents(self.openEvents, snap.recentEvents)
             self.openApprovals = snap.pendingApprovals
         }
         cb.openEvents = { [weak self] batch in