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src/window/utils.rs

@@ -432,13 +432,15 @@ where
         }
     }
 
-    pub fn load(&mut self, ui: &Ui) {
+    pub fn load(&mut self, ui: &Ui) -> bool {
+        let just_loaded = !self.loaded;
         if !self.loaded {
             self.current = ui
                 .data_mut(|d| d.get_persisted(ui.id()))
                 .unwrap_or_default();
             self.loaded = true;
         }
+        just_loaded
     }
 
     pub fn save(&mut self, ui: &Ui) {