diff --git a/tests/e2e/test_mobile_offline_issue_release.py b/tests/e2e/test_mobile_offline_issue_release.py
index 1c0bc0c..a8a2dab 100644
--- a/tests/e2e/test_mobile_offline_issue_release.py
+++ b/tests/e2e/test_mobile_offline_issue_release.py
@@ -306,9 +306,13 @@ def test_release_artifact_files_one_mobile_issue_exactly_once_after_offline_relo
                 f"requests={fake.requests[-20:]!r}"
             )
             # Deferred workspace startup can report its already-issued offline request
-            # after the pre-reconnect clear; retain every non-offline browser error.
+            # after the pre-reconnect clear. Chromium uses either its explicit offline
+            # code or a generic fetch rejection for that same request, depending on
+            # whether the service worker or page observes the disconnect first.
             browser_errors[:] = [
-                error for error in browser_errors if "ERR_INTERNET_DISCONNECTED" not in error
+                error for error in browser_errors
+                if "ERR_INTERNET_DISCONNECTED" not in error
+                and not error.startswith("context failed TypeError: Failed to fetch")
             ]
 
             for _ in range(40):