diff --git a/backend/static/js/loaders/messageLoaderV2.js b/backend/static/js/loaders/messageLoaderV2.js
index 1ca7d6bf..14e7bee7 100644
--- a/backend/static/js/loaders/messageLoaderV2.js
+++ b/backend/static/js/loaders/messageLoaderV2.js
@@ -102,6 +102,13 @@ export class MessageLoaderV2 {
         try {
             const { aroundMessageId, limit = this.config.INITIAL_LIMIT } = options;
             
+            console.log('[MessageLoaderV2] 🔍 Load decision:', {
+                aroundMessageId,
+                type: typeof aroundMessageId,
+                isPositive: aroundMessageId > 0,
+                willLoadAround: !!(aroundMessageId && aroundMessageId > 0)
+            });
+            
             let result;
             if (aroundMessageId && aroundMessageId > 0) {
                 result = await this._loadAround(chatId, aroundMessageId, limit, requestKey);
diff --git a/backend/static/js/pages/chatDetail.js b/backend/static/js/pages/chatDetail.js
index 8ff0dfa8..30cbc62e 100644
--- a/backend/static/js/pages/chatDetail.js
+++ b/backend/static/js/pages/chatDetail.js
@@ -71,6 +71,12 @@ function initWhenReady() {
     lastReadMessageId: appContainer.dataset.lastReadMessageId ? Number(appContainer.dataset.lastReadMessageId) : null
   };
   
+  console.log('[ChatDetail] 🔍 lastReadMessageId from HTML:', {
+    rawValue: appContainer.dataset.lastReadMessageId,
+    parsedValue: config.lastReadMessageId,
+    type: typeof config.lastReadMessageId
+  });
+  
   // Читаем дополнительные URL из chatScroll (для рендеринга сообщений)
   const chatScroll = document.getElementById('chatScroll');
   if (chatScroll) {