diff --git a/conversations.php b/conversations.php
index 8836a03..a0402ef 100644
--- a/conversations.php
+++ b/conversations.php
@@ -1948,6 +1948,20 @@
                         if (nearBottomNow && !this._userScrolling) this.scrollToBottom();
                     }
 
+                    // If we received any delta messages, perform an immediate full fetch to sync any server-side batching
+                    if (messages.length > 0) {
+                        if (!this._fullLoadInProgress) {
+                            try {
+                                if (console && console.debug) console.debug('pollNewMessages: delta returned, triggering immediate full reload');
+                                await this.loadMessages(this.currentUserId, true, nearBottomNow && !this._userScrolling);
+                            } catch (e) {
+                                console.warn('Immediate full reload after delta failed', e);
+                            }
+                        } else {
+                            if (console && console.debug) console.debug('Immediate full reload skipped because another full load is in progress');
+                        }
+                    }
+
                     // update latest timestamp from the last message
                     try {
                         const last = messages[messages.length - 1];