From 94fb19d9bee7449b4d1adadf55f28aca0b509731 Mon Sep 17 00:00:00 2001
From: PaddleStroke <pierrelouis.boyer@gmail.com>
Date: Mon, 6 Oct 2025 14:36:13 +0200
Subject: [PATCH] Assembly: Fix dragger when assembly is transformed

---
 src/Mod/Assembly/Gui/ViewProviderAssembly.cpp | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/Mod/Assembly/Gui/ViewProviderAssembly.cpp b/src/Mod/Assembly/Gui/ViewProviderAssembly.cpp
index ba9ede7a83..4f73df6e44 100644
--- a/src/Mod/Assembly/Gui/ViewProviderAssembly.cpp
+++ b/src/Mod/Assembly/Gui/ViewProviderAssembly.cpp
@@ -1105,6 +1105,13 @@ void ViewProviderAssembly::draggerMotionCallback(void* data, SoDragger* d)
     Base::Placement draggerPlc = sudoThis->getDraggerPlacement();
     Base::Placement movePlc = draggerPlc * sudoThis->draggerInitPlc.inverse();
 
+    // Transform the global delta `movePlc` in case the assembly is transformed.
+    Base::Placement asmPlc =
+        App::GeoFeature::getGlobalPlacement(sudoThis->getObject<AssemblyObject>());
+    if (!asmPlc.isIdentity()) {
+        movePlc = asmPlc.inverse() * movePlc * asmPlc;
+    }
+
     for (auto& movingObj : sudoThis->docsToMove) {
         App::DocumentObject* obj = movingObj.obj;