From 64a321528dd3334ff3aedc5a697c20444d02ae16 Mon Sep 17 00:00:00 2001
From: Noisyfox <timemanager.rick@gmail.com>
Date: Mon, 13 Jul 2026 14:40:24 +0800
Subject: [PATCH] Fix issue that unable to open 3mf again once the 3mf action
 dialog is cancelled (#14715)

---
 src/slic3r/GUI/Plater.cpp | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/slic3r/GUI/Plater.cpp b/src/slic3r/GUI/Plater.cpp
index 17015561ce..b7b8111f1e 100644
--- a/src/slic3r/GUI/Plater.cpp
+++ b/src/slic3r/GUI/Plater.cpp
@@ -12212,8 +12212,9 @@ void Plater::load_project(wxString const& filename2,
         BOOST_LOG_TRIVIAL(warning) << __FUNCTION__ << boost::format(": current loading other project, return directly");
         return;
     }
-    else
-        m_loading_project = true;
+
+    m_loading_project = true;
+    ScopeGuard loading_project_sc([this]() { m_loading_project = false; }); // Make sure state restored on any early return
 
     m_only_gcode = false;
     m_exported_file = false;
@@ -12307,7 +12308,6 @@ void Plater::load_project(wxString const& filename2,
     sidebar().set_flushing_volume_warning(has_modify);
 
     BOOST_LOG_TRIVIAL(info) << __FUNCTION__ << __LINE__ << " load project done";
-    m_loading_project = false;
 }
 
 // BBS: save logic