Fixed omitted ifc operators returns

src/blenderbim/blenderbim/bim/module/model/array.py

@@ -120,6 +120,7 @@ class EnableEditingArray(bpy.types.Operator, tool.Ifc.Operator):
         props.y = data["y"]
         props.z = data["z"]
         props.is_editing = self.item
+        return {'FINISHED'}
 
 
 class RemoveArray(bpy.types.Operator, tool.Ifc.Operator):

src/blenderbim/blenderbim/bim/module/model/stair.py

@@ -361,6 +361,7 @@ class EnableEditingStair(bpy.types.Operator, tool.Ifc.Operator):
             setattr(props, prop_name, data[prop_name])
 
         props.is_editing = 1
+        return {'FINISHED'}
 
 
 class RemoveStair(bpy.types.Operator, tool.Ifc.Operator):