diff --git a/include/ui/character_screen.hpp b/include/ui/character_screen.hpp
index 3899b16a..384464e0 100644
--- a/include/ui/character_screen.hpp
+++ b/include/ui/character_screen.hpp
@@ -48,6 +48,25 @@ public:
     void setOnBack(std::function<void()> cb) { onBack = std::move(cb); }
     void setOnDeleteCharacter(std::function<void(uint64_t)> cb) { onDeleteCharacter = std::move(cb); }
 
+    /**
+     * Reset selection state (e.g., when switching servers)
+     */
+    void reset() {
+        selectedCharacterIndex = -1;
+        characterSelected = false;
+        selectedCharacterGuid = 0;
+        restoredLastCharacter = false;
+        newlyCreatedCharacterName.clear();
+        statusMessage.clear();
+        deleteConfirmStage = 0;
+        previewInitialized_ = false;
+        previewGuid_ = 0;
+        previewAppearanceBytes_ = 0;
+        previewFacialFeatures_ = 0;
+        previewUseFemaleModel_ = false;
+        previewEquipHash_ = 0;
+    }
+
     /**
      * Check if a character has been selected
      */
diff --git a/include/ui/realm_screen.hpp b/include/ui/realm_screen.hpp
index 2899408f..8f9a9148 100644
--- a/include/ui/realm_screen.hpp
+++ b/include/ui/realm_screen.hpp
@@ -30,6 +30,17 @@ public:
         onRealmSelected = callback;
     }
 
+    /**
+     * Reset selection state (e.g., when switching servers)
+     */
+    void reset() {
+        selectedRealmIndex = -1;
+        realmSelected = false;
+        selectedRealmName.clear();
+        selectedRealmAddress.clear();
+        statusMessage.clear();
+    }
+
     /**
      * Check if a realm has been selected
      */
diff --git a/src/auth/auth_handler.cpp b/src/auth/auth_handler.cpp
index efd939be..2e6d89b1 100644
--- a/src/auth/auth_handler.cpp
+++ b/src/auth/auth_handler.cpp
@@ -34,6 +34,9 @@ bool AuthHandler::connect(const std::string& host, uint16_t port) {
     const std::string hostTrimmed = trimHost(host);
     LOG_INFO("Connecting to auth server: ", hostTrimmed, ":", port);
 
+    // Clear stale realm list from previous connection
+    realms.clear();
+
     socket = std::make_unique<network::TCPSocket>();
 
     // Set up packet callback
diff --git a/src/core/application.cpp b/src/core/application.cpp
index 9fea8d99..fb823150 100644
--- a/src/core/application.cpp
+++ b/src/core/application.cpp
@@ -537,6 +537,11 @@ void Application::logoutToLogin() {
             music->stopMusic(0.0f);
         }
     }
+    // Clear stale realm/character selection so switching servers starts fresh
+    if (uiManager) {
+        uiManager->getRealmScreen().reset();
+        uiManager->getCharacterScreen().reset();
+    }
     setState(AppState::AUTHENTICATION);
 }
 
@@ -1733,6 +1738,12 @@ void Application::setupUICallbacks() {
 
     // "Back" button on character screen
     uiManager->getCharacterScreen().setOnBack([this]() {
+        // Disconnect from world server and reset UI state for fresh realm selection
+        if (gameHandler) {
+            gameHandler->disconnect();
+        }
+        uiManager->getRealmScreen().reset();
+        uiManager->getCharacterScreen().reset();
         setState(AppState::REALM_SELECTION);
     });