From 94cc244383f3adfb50ccec368de0b9c73fea7d83 Mon Sep 17 00:00:00 2001
From: Victor Giers <mail@victorgiers.com>
Date: Mon, 27 Apr 2026 00:33:34 +0200
Subject: [PATCH] Require active session when updating transform preview
 handler

---
 src/viewport-three/viewport-host.ts | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/viewport-three/viewport-host.ts b/src/viewport-three/viewport-host.ts
index 987bb62b..9a917b4e 100644
--- a/src/viewport-three/viewport-host.ts
+++ b/src/viewport-three/viewport-host.ts
@@ -1281,7 +1281,10 @@ export class ViewportHost {
     this.applyTransformPreview();
     this.syncTransformGizmo();
 
-    if (rebuiltPreviewFromPointer) {
+    if (
+      rebuiltPreviewFromPointer &&
+      this.currentTransformSession.kind === "active"
+    ) {
       this.transformPreviewChangeHandler?.(this.currentTransformSession);
     }
   }