Corrige le masquage du menu au scroll

ChessCubing.App/wwwroot/js/chesscubing-interop.js

@@ -6,6 +6,7 @@
   let menuScrollStarted = false;
   let menuLastScrollY = 0;
   let menuAnimationFrame = 0;
+  let appliedBodyStateClasses = [];
 
   function syncViewportHeight() {
     const visibleHeight = window.visualViewport?.height ?? window.innerHeight;
@@ -166,7 +167,20 @@
         delete document.body.dataset.page;
       }
 
-      document.body.className = bodyClass || "";
+      for (const className of appliedBodyStateClasses) {
+        document.body.classList.remove(className);
+      }
+
+      appliedBodyStateClasses = (bodyClass || "")
+        .split(/\s+/)
+        .map((value) => value.trim())
+        .filter((value) => value.length > 0);
+
+      if (appliedBodyStateClasses.length > 0) {
+        document.body.classList.add(...appliedBodyStateClasses);
+      }
+
+      queueMenuVisibilitySync();
     },
   };