Fix: start position of the selection may be incorrect

addon/app.py

@@ -1,5 +1,5 @@
 '''
-    Copyright (C) 2021 - 2024 Akaneyu
+    Copyright (C) 2021 - 2025 Akaneyu
 
     This program is free software: you can redistribute it and/or modify
     it under the terms of the GNU General Public License as published by
@@ -136,17 +136,18 @@ def draw_handler():
 
     # release the selection if the image is changed
     if area_session.selection or area_session.selection_region:
-        if img != area_session.prev_image:
-            cancel_selection(context)
+        if area_session.prev_image:
+            if img != area_session.prev_image:
+                cancel_selection(context)
 
-        elif width != area_session.prev_image_width \
-                or height != area_session.prev_image_height:
+            elif width != area_session.prev_image_width \
+                    or height != area_session.prev_image_height:
 
-            crop_selection(context)
+                crop_selection(context)
 
-        area_session.prev_image = img
-        area_session.prev_image_width = width
-        area_session.prev_image_height = height
+    area_session.prev_image = img
+    area_session.prev_image_width = width
+    area_session.prev_image_height = height
 
     if area_session.layer_moving \
             or area_session.layer_rotating \