[FEAT] Bug fixes

src/views/EditorView.vue

@@ -615,27 +615,27 @@
             flipX: false,
             flipY: false,
           };
-          const insertIndex = frameIndex + fileIdx;
-          if (insertIndex < layer.sprites.length) {
-            layer.sprites = [...layer.sprites.slice(0, insertIndex), sprite, ...layer.sprites.slice(insertIndex + 1)];
-          } else {
-            while (layer.sprites.length < insertIndex) {
-              layer.sprites.push({
-                id: crypto.randomUUID(),
-                file: new File([], 'empty'),
-                img: new Image(),
-                url: '',
-                width: 0,
-                height: 0,
-                x: 0,
-                y: 0,
-                rotation: 0,
-                flipX: false,
-                flipY: false,
-              });
-            }
-            layer.sprites = [...layer.sprites, sprite];
+          const targetIndex = frameIndex + fileIdx;
+
+          // Extend the array with empty slots if needed
+          while (layer.sprites.length <= targetIndex) {
+            layer.sprites.push({
+              id: crypto.randomUUID(),
+              file: new File([], 'empty'),
+              img: new Image(),
+              url: '',
+              width: 0,
+              height: 0,
+              x: 0,
+              y: 0,
+              rotation: 0,
+              flipX: false,
+              flipY: false,
+            });
           }
+
+          // Now replace at target index (either existing sprite or empty placeholder)
+          layer.sprites = [...layer.sprites.slice(0, targetIndex), sprite, ...layer.sprites.slice(targetIndex + 1)];
         };
         img.src = url;
       };