diff --git a/packages/frontend/src/utility/room/engine.ts b/packages/frontend/src/utility/room/engine.ts
index dac1d6dc97..a9192e3d28 100644
--- a/packages/frontend/src/utility/room/engine.ts
+++ b/packages/frontend/src/utility/room/engine.ts
@@ -717,10 +717,11 @@ export class RoomEngine {
 	}
 
 	public selectObject(objectId: string | null) {
-		if (this.selected.value != null) {
-			this.clearHighlight();
-			this.selected.value.objectEntity.model.bakeMesh();
+		const currentSelected = this.selected.value;
+		if (currentSelected != null) {
 			this.selected.value = null;
+			this.clearHighlight();
+			currentSelected.objectEntity.model.bakeMesh();
 		}
 
 		if (objectId != null) {
diff --git a/packages/frontend/src/utility/room/objects/blind.ts b/packages/frontend/src/utility/room/objects/blind.ts
index fa99748f77..f6816a187e 100644
--- a/packages/frontend/src/utility/room/objects/blind.ts
+++ b/packages/frontend/src/utility/room/objects/blind.ts
@@ -58,7 +58,7 @@ export const blind = defineObject({
 			blades = [];
 
 			for (let i = 0; i < options.blades; i++) {
-				const b = blade.createInstance('blade_' + i);
+				const b = blade.clone('blade_' + i); // createInstanceを使いたいが、削除するときになぜかエラーになる
 				if (i / options.blades < temp.open) {
 					b.position.y -= (i * 4/*cm*/) / WORLD_SCALE;
 				} else {