diff --git a/backend/main.py b/backend/main.py
index ef68537..4867fc0 100644
--- a/backend/main.py
+++ b/backend/main.py
@@ -327,7 +327,7 @@ MEDIA_DIR = os.getenv("MEDIA_DIR", "/data/media")
 os.makedirs(MEDIA_DIR, exist_ok=True)
 app.mount("/media", StaticFiles(directory=MEDIA_DIR), name="media")
 
-APP_VER = "749"  # muss mit APP_VER in app.js übereinstimmen
+APP_VER = "750"  # muss mit APP_VER in app.js übereinstimmen
 
 @app.get("/api/version")
 async def app_version():
diff --git a/backend/static/index.html b/backend/static/index.html
index 987d176..196e18b 100644
--- a/backend/static/index.html
+++ b/backend/static/index.html
@@ -578,7 +578,7 @@
 <script src="/js/api.js?v=94"></script>
 <script src="/js/ui.js?v=94"></script>
 <script src="/js/app.js?v=94"></script>
-<script src="/js/worlds.js?v=749"></script>
+<script src="/js/worlds.js?v=750"></script>
 
 <!-- Feature-Seiten werden lazy geladen -->
 
diff --git a/backend/static/js/app.js b/backend/static/js/app.js
index 65ae8e9..bd6ab66 100644
--- a/backend/static/js/app.js
+++ b/backend/static/js/app.js
@@ -3,7 +3,7 @@
    Router, State-Management, Navigation, Initialisierung.
    ============================================================ */
 
-const APP_VER     = '749'; // ← bei jedem Deploy mit Frontend-Änderungen erhöhen
+const APP_VER     = '750'; // ← bei jedem Deploy mit Frontend-Änderungen erhöhen
 const APP_VERSION = '1.5.0'; // ← semantische Version, wird bei make release gesetzt
 const IS_STAGING  = location.hostname === 'staging.banyaro.app';
 
diff --git a/backend/static/js/worlds.js b/backend/static/js/worlds.js
index e451d69..49d0608 100644
--- a/backend/static/js/worlds.js
+++ b/backend/static/js/worlds.js
@@ -275,7 +275,7 @@ window.Worlds = (() => {
 
     const ov = document.createElement('div');
     ov.id = 'fab-overlay';
-    ov.style.cssText = 'position:fixed;inset:0;z-index:300;display:flex;flex-direction:column;justify-content:flex-end';
+    ov.style.cssText = 'position:fixed;inset:0;z-index:460;display:flex;flex-direction:column;justify-content:flex-end';
     ov.innerHTML = `
       <div id="fab-backdrop" style="position:absolute;inset:0;background:rgba(0,0,0,0.55);backdrop-filter:blur(2px)"></div>
       <div style="position:relative;z-index:1;background:var(--c-bg);border-radius:24px 24px 0 0;
diff --git a/backend/static/sw.js b/backend/static/sw.js
index 8857c83..ba4fbbf 100644
--- a/backend/static/sw.js
+++ b/backend/static/sw.js
@@ -3,7 +3,7 @@
    Offline-Cache + Push Notifications + Tile-Cache
    ============================================================ */
 
-const CACHE_VERSION = 'by-v749';
+const CACHE_VERSION = 'by-v750';
 const CACHE_STATIC  = `${CACHE_VERSION}-static`;
 const CACHE_TILES   = 'ban-yaro-tiles-v1';  // bleibt über SW-Updates erhalten
 const CACHE_API     = 'ban-yaro-api-v1';    // API-Response-Cache