From 20b33576c93d0a546e9068cf92f09c6d3f1330d8 Mon Sep 17 00:00:00 2001
From: MO Thibault <103271673+MO-Thibault@users.noreply.github.com>
Date: Wed, 20 May 2026 14:37:55 -0400
Subject: [PATCH] fix(rtd): strip _ref from EIDs before merging into prebid

The _ref property (UID2 refresh metadata) is internal to the SDK
wrapper's cache and should never leak into prebid's ortb2Fragments.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
---
 lib/core/prebid/rtd.ts | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/lib/core/prebid/rtd.ts b/lib/core/prebid/rtd.ts
index cd9f350..dbb88da 100644
--- a/lib/core/prebid/rtd.ts
+++ b/lib/core/prebid/rtd.ts
@@ -321,7 +321,8 @@ function handleRtd(
 
     routes.forEach((route) => {
       eidsPerRoute[route] = eidsPerRoute[route] ?? { user: { ext: { eids: [] } } };
-      eidsPerRoute[route].user!.ext!.eids!.push(eid);
+      const { _ref, ...clean } = eid as any;
+      eidsPerRoute[route].user!.ext!.eids!.push(clean);
       config.log("info", `EID with source ${eid.source} routed to ${route}`);
     });
     processedEids += 1;