Merge pull request #7778 from whjdark/patch-2

[bug fix] KIE模式下关键字无法保存

PPOCRLabel/PPOCRLabel.py

@@ -2715,6 +2715,9 @@ class MainWindow(QMainWindow):
 
             self._update_shape_color(shape)
             self.keyDialog.addLabelHistory(key_text)
+            
+        # save changed shape
+        self.setDirty()
 
     def undoShapeEdit(self):
         self.canvas.restoreShape()