From 7a1ca538053f82ba97c64361c55e0d8f3d283079 Mon Sep 17 00:00:00 2001
From: Michael <13900043+michaelzhang-ai@users.noreply.github.com>
Date: Tue, 10 Mar 2026 17:24:11 -0700
Subject: [PATCH] [AMD] Fix JSON mode streaming test flake on AMD CI (#20293)

---
 test/registered/openai_server/features/test_json_mode.py | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/test/registered/openai_server/features/test_json_mode.py b/test/registered/openai_server/features/test_json_mode.py
index 946d8e0ff..136fa9ddf 100644
--- a/test/registered/openai_server/features/test_json_mode.py
+++ b/test/registered/openai_server/features/test_json_mode.py
@@ -10,6 +10,7 @@ from sglang.test.test_utils import (
     DEFAULT_TIMEOUT_FOR_SERVER_LAUNCH,
     DEFAULT_URL_FOR_TEST,
     CustomTestCase,
+    is_in_amd_ci,
     popen_launch_server,
 )
 
@@ -106,6 +107,9 @@ class ServerWithGrammarBackend(CustomTestCase):
             cls.backend,
         ]
 
+        if is_in_amd_ci():
+            other_args.append("--constrained-json-disable-any-whitespace")
+
         cls.process = popen_launch_server(
             cls.model,
             cls.base_url,