diff --git a/src/AcDream.App/UI/Layout/RetailConfirmationDialogView.cs b/src/AcDream.App/UI/Layout/RetailConfirmationDialogView.cs
index 71cc4673..d21dbddc 100644
--- a/src/AcDream.App/UI/Layout/RetailConfirmationDialogView.cs
+++ b/src/AcDream.App/UI/Layout/RetailConfirmationDialogView.cs
@@ -129,10 +129,15 @@ internal sealed class RetailConfirmationDialogView : IRetailDialogView
 
     private void SizeAndCenter()
     {
+        // Center against the space the tree lays out in — the fixed authored
+        // canvas while a pre-world screen is active (gate round 2: centering
+        // against the raw window width put the exit dialog far right of the
+        // stretched 800x600 canvas center).
+        var space = _host.EffectiveCanvasSize;
         Root.Left = 0f;
         Root.Top = 0f;
-        Root.Width = _host.Width;
-        Root.Height = _host.Height;
+        Root.Width = space.X;
+        Root.Height = space.Y;
         _popup.Left = MathF.Round((Root.Width - _popup.Width) * 0.5f);
         _popup.Top = MathF.Round((Root.Height - _popup.Height) * 0.5f);
     }
diff --git a/src/AcDream.App/UI/Layout/RetailConfirmationTextInputDialogView.cs b/src/AcDream.App/UI/Layout/RetailConfirmationTextInputDialogView.cs
index e21d330b..1b1467c8 100644
--- a/src/AcDream.App/UI/Layout/RetailConfirmationTextInputDialogView.cs
+++ b/src/AcDream.App/UI/Layout/RetailConfirmationTextInputDialogView.cs
@@ -150,10 +150,13 @@ internal sealed class RetailConfirmationTextInputDialogView : IRetailDialogView
 
     private void SizeAndCenter()
     {
+        // Center against the layout space (fixed canvas while a pre-world
+        // screen is active) — see RetailConfirmationDialogView.SizeAndCenter.
+        var space = _host.EffectiveCanvasSize;
         Root.Left = 0f;
         Root.Top = 0f;
-        Root.Width = _host.Width;
-        Root.Height = _host.Height;
+        Root.Width = space.X;
+        Root.Height = space.Y;
         _popup.Left = MathF.Round((Root.Width - _popup.Width) * 0.5f);
         _popup.Top = MathF.Round((Root.Height - _popup.Height) * 0.5f);
     }
diff --git a/src/AcDream.App/UI/Layout/RetailMessageDialogView.cs b/src/AcDream.App/UI/Layout/RetailMessageDialogView.cs
index a9246ac5..9ec4d987 100644
--- a/src/AcDream.App/UI/Layout/RetailMessageDialogView.cs
+++ b/src/AcDream.App/UI/Layout/RetailMessageDialogView.cs
@@ -95,10 +95,13 @@ internal sealed class RetailMessageDialogView : IRetailDialogView
 
     private void SizeAndCenter()
     {
+        // Center against the layout space (fixed canvas while a pre-world
+        // screen is active) — see RetailConfirmationDialogView.SizeAndCenter.
+        var space = _host.EffectiveCanvasSize;
         Root.Left = 0f;
         Root.Top = 0f;
-        Root.Width = _host.Width;
-        Root.Height = _host.Height;
+        Root.Width = space.X;
+        Root.Height = space.Y;
         _popup.Left = MathF.Round((Root.Width - _popup.Width) * 0.5f);
         _popup.Top = MathF.Round((Root.Height - _popup.Height) * 0.5f);
     }
diff --git a/src/AcDream.App/UI/UiRoot.cs b/src/AcDream.App/UI/UiRoot.cs
index fe3246b1..7ca428ac 100644
--- a/src/AcDream.App/UI/UiRoot.cs
+++ b/src/AcDream.App/UI/UiRoot.cs
@@ -44,6 +44,19 @@ public sealed class UiRoot : UiElement
     /// </summary>
     public Vector2? FixedCanvasSize { get; set; }
 
+    /// <summary>
+    /// The coordinate space the retained tree currently lays out in: the fixed
+    /// authored canvas while one is active, else the window itself. Anything
+    /// that positions against "the screen" (dialog centering, full-screen
+    /// scrims) must use THIS — the gate-round-2 exit dialog centered against
+    /// the 1920px window while the tree lived in the 800px canvas, landing far
+    /// right of the visible screen center.
+    /// </summary>
+    public Vector2 EffectiveCanvasSize =>
+        FixedCanvasSize is { X: > 0f, Y: > 0f } canvas
+            ? canvas
+            : new Vector2(Width, Height);
+
     /// <summary>Window→canvas stretch factor; One when no fixed canvas is set.</summary>
     public Vector2 CanvasScale =>
         FixedCanvasSize is { X: > 0f, Y: > 0f } canvas && Width > 0f && Height > 0f
diff --git a/src/AcDream.Runtime/Session/LiveSessionController.cs b/src/AcDream.Runtime/Session/LiveSessionController.cs
index 3cdc3413..5973e22c 100644
--- a/src/AcDream.Runtime/Session/LiveSessionController.cs
+++ b/src/AcDream.Runtime/Session/LiveSessionController.cs
@@ -172,6 +172,16 @@ public interface ILiveSessionOperations
     WorldSession CreateSession(IPEndPoint endpoint);
     void Connect(WorldSession session, string user, string password);
     CharacterList.Parsed? GetCharacters(WorldSession session);
+    /// <summary>
+    /// Campaign LA gate round 2 (world-name live fix): ACE sends ServerName
+    /// (0xF7E1) in the SAME connect-response batch as CharacterList, so the
+    /// <c>ServerNameReceived</c> event fires during the handshake pump —
+    /// BEFORE the controller's binding subscribes. The durable
+    /// <see cref="WorldSession.ServerInfo"/> field is therefore read
+    /// synchronously after Connect, exactly like <see cref="GetCharacters"/>
+    /// reads the durable roster; the event remains for post-connect updates.
+    /// </summary>
+    ServerName.Parsed? GetServerInfo(WorldSession session) => session.ServerInfo;
     void StartCharacterSelectionReceive(WorldSession session) =>
         session.StartCharacterSelectionReceive();
     void EnterWorld(WorldSession session, int activeCharacterIndex);
@@ -753,6 +763,14 @@ public sealed class LiveSessionController
                     return new LiveSessionStartResult(LiveSessionStartStatus.Deferred);
             }
 
+            // World name arrives in the SAME connect batch as CharacterList,
+            // during the handshake pump — before the binding's
+            // ServerNameReceived subscription exists — so the durable field is
+            // read here exactly like the roster above (gate-round-2 live fix:
+            // the event-only wiring left the World box empty against ACE).
+            if (_operations.GetServerInfo(session) is { } serverInfo)
+                CharacterSelectionState.ApplyWorldName(serverInfo.WorldName);
+
             // Campaign LA slice LA2: the probe short-circuit lands here —
             // only after a real CharacterList was returned and its roster was
             // reported, before TrySelectCharacter ever runs. A missing
diff --git a/tests/AcDream.App.Tests/UI/Layout/CharacterManagementUiControllerTests.cs b/tests/AcDream.App.Tests/UI/Layout/CharacterManagementUiControllerTests.cs
index 678540f6..b75345e0 100644
--- a/tests/AcDream.App.Tests/UI/Layout/CharacterManagementUiControllerTests.cs
+++ b/tests/AcDream.App.Tests/UI/Layout/CharacterManagementUiControllerTests.cs
@@ -386,6 +386,13 @@ public sealed class CharacterManagementUiControllerTests
         UiButton exit = environment.Button(
             CharacterManagementUiController.ExitElementId);
 
+        // Gate round 2 follow-up: the window is BIGGER than the fixed canvas
+        // (the live shape — 1920×1080 window over the 800×600 authored
+        // screen). The exit dialog centered against the raw window width and
+        // landed far right of the visible canvas center.
+        environment.Host.Width = 1920f;
+        environment.Host.Height = 1080f;
+
         exit.OnClick!();
 
         Assert.NotEqual(0u, controller.ConfirmExitDialogContext);
@@ -393,6 +400,14 @@ public sealed class CharacterManagementUiControllerTests
         Assert.Equal(
             "Are you sure you want to leave?",
             Message(dialog));
+        // The dialog's scrim + popup must live in CANVAS space: scrim spans
+        // exactly the canvas, popup centers within it.
+        Assert.Equal(800f, dialog.Root.Width);
+        Assert.Equal(600f, dialog.Root.Height);
+        UiElement popup = Assert.Single(
+            dialog.Root.Children,
+            static child => child.Visible && child.Width > 0f);
+        Assert.InRange(popup.Left + popup.Width * 0.5f, 399f, 401f);
         DialogButton(dialog, RetailConfirmationDialogView.RejectButtonId).OnClick!();
 
         Assert.Equal(0, environment.Runtime.RequestExitCalls);
diff --git a/tests/AcDream.Runtime.Tests/Session/LiveSessionControllerTests.cs b/tests/AcDream.Runtime.Tests/Session/LiveSessionControllerTests.cs
index 02d8bee4..b2d752a6 100644
--- a/tests/AcDream.Runtime.Tests/Session/LiveSessionControllerTests.cs
+++ b/tests/AcDream.Runtime.Tests/Session/LiveSessionControllerTests.cs
@@ -113,6 +113,13 @@ public sealed class LiveSessionControllerTests
             return Characters;
         }
 
+        /// <summary>Gate-round-2 world-name live fix: mirrors the durable
+        /// post-connect read the production path performs (the wire event
+        /// fires during the handshake, before any subscriber exists).</summary>
+        public ServerName.Parsed? ServerInfo { get; set; }
+
+        public ServerName.Parsed? GetServerInfo(WorldSession session) => ServerInfo;
+
         public void StartCharacterSelectionReceive(WorldSession session) =>
             calls.Add("start-character-selection-receive");
 
@@ -349,6 +356,33 @@ public sealed class LiveSessionControllerTests
         Assert.True(host.CommandBuses[0].Active);
     }
 
+    /// <summary>
+    /// Gate-round-2 live fix: ACE sends ServerName (0xF7E1) in the SAME
+    /// connect batch as CharacterList, so the event fires during the
+    /// handshake pump before the binding subscribes — the World box stayed
+    /// empty against a live server while the event-only unit tests passed.
+    /// Start must read the durable ServerInfo after connect, exactly like
+    /// the roster.
+    /// </summary>
+    [Fact]
+    public void Start_AppliesWorldNameFromDurableServerInfoAfterConnect()
+    {
+        var calls = new List<string>();
+        var operations = new TestOperations(calls)
+        {
+            ServerInfo = new ServerName.Parsed(1, 128, "sawato"),
+        };
+        var host = new TestHost(calls);
+        var controller = new LiveSessionController(operations);
+
+        LiveSessionStartResult result = controller.Start(LiveOptions(), host);
+
+        Assert.Equal(LiveSessionStartStatus.Connected, result.Status);
+        Assert.Equal(
+            "sawato",
+            controller.CharacterSelectionState.View.Snapshot.WorldName);
+    }
+
     [Fact]
     public void Start_ReportsRosterFromCharacterListBeforeSelection()
     {