diff --git a/packages/frontend/src/components/MkWorldAvatarEditDialog.vue b/packages/frontend/src/components/MkWorldAvatarEditDialog.vue
index b8d7cfa8e6..db2b267c29 100644
--- a/packages/frontend/src/components/MkWorldAvatarEditDialog.vue
+++ b/packages/frontend/src/components/MkWorldAvatarEditDialog.vue
@@ -35,7 +35,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 					:enterFromClass="prefer.s.animation ? $style.transition_options_enterFrom : ''"
 					:leaveToClass="prefer.s.animation ? $style.transition_options_leaveTo : ''"
 				>
-					<div v-if="showOptions" :class="$style.customize">
+					<div v-show="showOptions" :class="$style.customize">
 						<div class="_gaps">
 							<MkInput v-model="avatarName">
 								<template #label>{{ i18n.ts.name }}</template>
diff --git a/packages/frontend/src/pages/rooms/room.add-object-dialog.vue b/packages/frontend/src/pages/rooms/room.add-object-dialog.vue
index 11dae7614f..289e8d17b6 100644
--- a/packages/frontend/src/pages/rooms/room.add-object-dialog.vue
+++ b/packages/frontend/src/pages/rooms/room.add-object-dialog.vue
@@ -203,7 +203,7 @@ watch(selectedId, (newId) => {
 });
 
 function updateObjectOption(k: string, v: any) {
-	controller.updateObjectOption(k, v, attachments);
+	controller.updateObjectOption(k, deepClone(v), attachments);
 	selectedObjectOptionsState.value![k] = v;
 }
 
@@ -341,9 +341,10 @@ async function cancel() {
 	position: absolute;
 	top: 0;
 	right: 0;
-	height: stretch;
+	height: 100%;
 	width: 300px;
 	overflow: auto;
+	scrollbar-gutter: stable;
 	box-sizing: border-box;
 	padding: 32px 16px 16px 16px;
 	background: var(--MI_THEME-panel);
diff --git a/packages/frontend/src/pages/rooms/room.core.vue b/packages/frontend/src/pages/rooms/room.core.vue
index 88961705a0..eead5fe77b 100644
--- a/packages/frontend/src/pages/rooms/room.core.vue
+++ b/packages/frontend/src/pages/rooms/room.core.vue
@@ -433,7 +433,7 @@ function showSnappingMenu(ev: PointerEvent) {
 
 function updateObjectOption(k: string, v: any) {
 	// TODO: podtMrssageのコスト削減のためattachmentsは更新がある場合のみ送る
-	controller.updateObjectOption(controller.selected.value.objectId, k, v, attachments);
+	controller.updateObjectOption(controller.selected.value.objectId, k, deepClone(v), attachments);
 }
 
 async function addObject(ev: PointerEvent) {