Fix

src/composables/useLayers.ts

@@ -153,7 +153,15 @@ export const useLayers = () => {
         URL.revokeObjectURL(s.url);
       } catch {}
     }
-    l.sprites.splice(i, 1);
+
+    if (layers.value.length > 1) {
+      // If there are multiple layers, we want to maintain frame alignment
+      // so we replace the sprite with an empty one instead of shifting
+      l.sprites[i] = createEmptySprite();
+    } else {
+      // If there's only one layer, we can safely remove the frame
+      l.sprites.splice(i, 1);
+    }
   };
 
   const removeSprites = (ids: string[]) => {
@@ -175,7 +183,12 @@ export const useLayers = () => {
           URL.revokeObjectURL(s.url);
         } catch {}
       }
-      l.sprites.splice(i, 1);
+
+      if (layers.value.length > 1) {
+        l.sprites[i] = createEmptySprite();
+      } else {
+        l.sprites.splice(i, 1);
+      }
     });
   };