From bb78cb5d4a042fbd5623bf086c20f769b4b30836 Mon Sep 17 00:00:00 2001
From: 134 <a134@134deMacBook-Pro.local>
Date: Fri, 3 Jul 2026 22:01:35 +0800
Subject: [PATCH] fix: disable striped rmbg scale drafts by default

---
 app/api/canvas/local-edit/route.ts | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/app/api/canvas/local-edit/route.ts b/app/api/canvas/local-edit/route.ts
index 174851ba8..443f8aefc 100644
--- a/app/api/canvas/local-edit/route.ts
+++ b/app/api/canvas/local-edit/route.ts
@@ -2167,7 +2167,10 @@ async function buildScaleAdjustStructureLockedComposite(params: {
     sourceWidth,
     userId,
   } = params;
-  const rmbgComposite = includePersonPixels
+  // The current RMBG provider can bake horizontal matte stripes into furniture cutouts.
+  const allowRmbgStructureLock =
+    process.env.CANVAS_SCALE_ADJUST_ENABLE_RMBG_STRUCTURE === "1";
+  const rmbgComposite = includePersonPixels || !allowRmbgStructureLock
     ? null
     : await buildScaleAdjustRmbgStructureLockedComposite({
         placement,