From 25ceb87d7255554c194d820e06f1b2fa32537e0a Mon Sep 17 00:00:00 2001
From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com>
Date: Wed, 20 May 2026 22:08:11 +0000
Subject: [PATCH] Tighten observability zip checks

---
 python/packages/core/agent_framework/observability.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/python/packages/core/agent_framework/observability.py b/python/packages/core/agent_framework/observability.py
index 9d36003bee..42c1fd4308 100644
--- a/python/packages/core/agent_framework/observability.py
+++ b/python/packages/core/agent_framework/observability.py
@@ -2161,7 +2161,7 @@ def _capture_messages(
     prepended_count = len(logging_messages) - len(normalized_messages)
     prepended_messages = [_to_otel_message(message) for message in logging_messages[:prepended_count]]
     for index, (message, otel_message) in enumerate(
-        zip(logging_messages[:prepended_count], prepended_messages, strict=False)
+        zip(logging_messages[:prepended_count], prepended_messages, strict=True)
     ):
         # Reuse the otel message representation for logging instead of calling to_dict()
         # to avoid expensive Pydantic serialization overhead
@@ -2174,7 +2174,7 @@ def _capture_messages(
             },
         )
     for index, (message, otel_message) in enumerate(
-        zip(normalized_messages, span_messages, strict=False), start=prepended_count
+        zip(normalized_messages, span_messages, strict=True), start=prepended_count
     ):
         logger.info(
             otel_message,