Merge pull request #2318 from KhronosGroup/fix_2317

fix_2317

addons/io_scene_gltf2/blender/exp/gltf2_blender_gather_tree.py

@@ -365,7 +365,8 @@ def recursive_node_traverse(self, blender_object, blender_bone, parent_uuid, par
                 self.recursive_node_traverse(dupl, None, node.uuid, parent_coll_matrix_world, new_delta or delta, blender_children, dupli_world_matrix=mat)
 
         # Geometry Nodes instances
-        if self.export_settings['gltf_gn_mesh'] is True:
+        # Make sure to not check instances for instanced collection, because we will export what's inside the collection twice
+        if self.export_settings['gltf_gn_mesh'] is True and node.blender_type == VExportNode.OBJECT:
             # Do not force export as empty
             # Because GN graph can have both geometry and instances
             depsgraph = bpy.context.evaluated_depsgraph_get()