diff --git a/packages/frontend/src/components/MkContainer.vue b/packages/frontend/src/components/MkContainer.vue
index a6372b7b6..d03331a6e 100644
--- a/packages/frontend/src/components/MkContainer.vue
+++ b/packages/frontend/src/components/MkContainer.vue
@@ -1,6 +1,6 @@
 <template>
-<div class="_panel" :class="[$style.root, { [$style.naked]: naked, [$style.thin]: thin, [$style.hideHeader]: !showHeader, [$style.scrollable]: scrollable, [$style.closed]: !showBody }]">
-	<header v-if="showHeader" ref="header" :class="$style.header">
+<div ref="rootEl" class="_panel" :class="[$style.root, { [$style.naked]: naked, [$style.thin]: thin, [$style.hideHeader]: !showHeader, [$style.scrollable]: scrollable, [$style.closed]: !showBody }]">
+	<header v-if="showHeader" ref="headerEl" :class="$style.header">
 		<div :class="$style.title">
 			<span :class="$style.titleIcon"><slot name="icon"></slot></span>
 			<slot name="header"></slot>
@@ -23,7 +23,7 @@
 		@leave="leave"
 		@after-leave="afterLeave"
 	>
-		<div v-show="showBody" ref="content" :class="[$style.content, { [$style.omitted]: omitted }]">
+		<div v-show="showBody" ref="contentEl" :class="[$style.content, { [$style.omitted]: omitted }]">
 			<slot></slot>
 			<button v-if="omitted" :class="$style.fade" class="_button" @click="() => { ignoreOmit = true; omitted = false; }">
 				<span :class="$style.fadeLabel">{{ i18n.ts.showMore }}</span>
@@ -33,109 +33,80 @@
 </div>
 </template>
 
-<script lang="ts">
-import { defineComponent } from 'vue';
+<script lang="ts" setup>
+import { onMounted, ref, shallowRef, watch } from 'vue';
 import { defaultStore } from '@/store';
 import { i18n } from '@/i18n';
 
-export default defineComponent({
-	props: {
-		showHeader: {
-			type: Boolean,
-			required: false,
-			default: true,
-		},
-		thin: {
-			type: Boolean,
-			required: false,
-			default: false,
-		},
-		naked: {
-			type: Boolean,
-			required: false,
-			default: false,
-		},
-		foldable: {
-			type: Boolean,
-			required: false,
-			default: false,
-		},
-		expanded: {
-			type: Boolean,
-			required: false,
-			default: true,
-		},
-		scrollable: {
-			type: Boolean,
-			required: false,
-			default: false,
-		},
-		maxHeight: {
-			type: Number,
-			required: false,
-			default: null,
-		},
-	},
-	data() {
-		return {
-			showBody: this.expanded,
-			omitted: null,
-			ignoreOmit: false,
-			defaultStore,
-			i18n,
-		};
-	},
-	mounted() {
-		this.$watch('showBody', showBody => {
-			const headerHeight = this.showHeader ? this.$refs.header.offsetHeight : 0;
-			this.$el.style.minHeight = `${headerHeight}px`;
-			if (showBody) {
-				this.$el.style.flexBasis = 'auto';
-			} else {
-				this.$el.style.flexBasis = `${headerHeight}px`;
-			}
-		}, {
-			immediate: true,
-		});
+const props = withDefaults(defineProps<{
+	showHeader?: boolean;
+	thin?: boolean;
+	naked?: boolean;
+	foldable?: boolean;
+	scrollable?: boolean;
+	expanded?: boolean;
+	maxHeight?: number | null;
+}>(), {
+	expanded: true,
+	showHeader: true,
+	maxHeight: null,
+});
 
-		this.$el.style.setProperty('--maxHeight', this.maxHeight + 'px');
+const rootEl = shallowRef<HTMLElement>();
+const contentEl = shallowRef<HTMLElement>();
+const headerEl = shallowRef<HTMLElement>();
+const showBody = ref(props.expanded);
+const ignoreOmit = ref(false);
+const omitted = ref(false);
 
-		const calcOmit = () => {
-			if (this.omitted || this.ignoreOmit || this.maxHeight == null) return;
-			const height = this.$refs.content.offsetHeight;
-			this.omitted = height > this.maxHeight;
-		};
+function enter(el) {
+	const elementHeight = el.getBoundingClientRect().height;
+	el.style.height = 0;
+	el.offsetHeight; // reflow
+	el.style.height = Math.min(elementHeight, props.maxHeight ?? Infinity) + 'px';
+}
 
+function afterEnter(el) {
+	el.style.height = null;
+}
+
+function leave(el) {
+	const elementHeight = el.getBoundingClientRect().height;
+	el.style.height = elementHeight + 'px';
+	el.offsetHeight; // reflow
+	el.style.height = 0;
+}
+
+function afterLeave(el) {
+	el.style.height = null;
+}
+
+const calcOmit = () => {
+	if (omitted.value || ignoreOmit.value || props.maxHeight == null) return;
+	const height = contentEl.value.offsetHeight;
+	omitted.value = height > props.maxHeight;
+};
+
+onMounted(() => {
+	watch(showBody, v => {
+		const headerHeight = props.showHeader ? headerEl.value.offsetHeight : 0;
+		rootEl.value.style.minHeight = `${headerHeight}px`;
+		if (v) {
+			rootEl.value.style.flexBasis = 'auto';
+		} else {
+			rootEl.value.style.flexBasis = `${headerHeight}px`;
+		}
+	}, {
+		immediate: true,
+	});
+
+	rootEl.value.style.setProperty('--maxHeight', props.maxHeight + 'px');
+
+	calcOmit();
+
+	new ResizeObserver((entries, observer) => {
 		calcOmit();
-		new ResizeObserver((entries, observer) => {
-			calcOmit();
-		}).observe(this.$refs.content);
-	},
-	methods: {
-		toggleContent(show: boolean) {
-			if (!this.foldable) return;
-			this.showBody = show;
-		},
-
-		enter(el) {
-			const elementHeight = el.getBoundingClientRect().height;
-			el.style.height = 0;
-			el.offsetHeight; // reflow
-			el.style.height = elementHeight + 'px';
-		},
-		afterEnter(el) {
-			el.style.height = null;
-		},
-		leave(el) {
-			const elementHeight = el.getBoundingClientRect().height;
-			el.style.height = elementHeight + 'px';
-			el.offsetHeight; // reflow
-			el.style.height = 0;
-		},
-		afterLeave(el) {
-			el.style.height = null;
-		},
-	},
+	}).observe(contentEl.value);
 });
 </script>
 
diff --git a/packages/frontend/src/components/MkFolder.vue b/packages/frontend/src/components/MkFolder.vue
index fd070a5f1..10eee6aab 100644
--- a/packages/frontend/src/components/MkFolder.vue
+++ b/packages/frontend/src/components/MkFolder.vue
@@ -65,7 +65,7 @@ const getBgColor = (el: HTMLElement) => {
 	}
 };
 
-let rootEl = $ref<HTMLElement>();
+let rootEl = $shallowRef<HTMLElement>();
 let bgSame = $ref(false);
 let opened = $ref(props.defaultOpen);
 let openedAtLeastOnce = $ref(props.defaultOpen);
diff --git a/packages/frontend/src/components/MkOmit.vue b/packages/frontend/src/components/MkOmit.vue
index 0f148022b..e2d68d12c 100644
--- a/packages/frontend/src/components/MkOmit.vue
+++ b/packages/frontend/src/components/MkOmit.vue
@@ -17,7 +17,7 @@ const props = withDefaults(defineProps<{
 	maxHeight: 200,
 });
 
-let content = $ref<HTMLElement>();
+let content = $shallowRef<HTMLElement>();
 let omitted = $ref(false);
 let ignoreOmit = $ref(false);
 
diff --git a/packages/frontend/src/components/MkRange.vue b/packages/frontend/src/components/MkRange.vue
index a1ee6367a..eaa134df2 100644
--- a/packages/frontend/src/components/MkRange.vue
+++ b/packages/frontend/src/components/MkRange.vue
@@ -17,7 +17,7 @@
 </template>
 
 <script lang="ts" setup>
-import { computed, defineAsyncComponent, onMounted, onUnmounted, ref, watch } from 'vue';
+import { computed, defineAsyncComponent, onMounted, onUnmounted, ref, watch, shallowRef } from 'vue';
 import * as os from '@/os';
 
 const props = withDefaults(defineProps<{
@@ -39,8 +39,8 @@ const emit = defineEmits<{
 	(ev: 'update:modelValue', value: number): void;
 }>();
 
-const containerEl = ref<HTMLElement>();
-const thumbEl = ref<HTMLElement>();
+const containerEl = shallowRef<HTMLElement>();
+const thumbEl = shallowRef<HTMLElement>();
 
 const rawValue = ref((props.modelValue - props.min) / (props.max - props.min));
 const steppedRawValue = computed(() => {
diff --git a/packages/frontend/src/pages/welcome.timeline.vue b/packages/frontend/src/pages/welcome.timeline.vue
index 6a507ee1e..6ec6e3f86 100644
--- a/packages/frontend/src/pages/welcome.timeline.vue
+++ b/packages/frontend/src/pages/welcome.timeline.vue
@@ -33,7 +33,7 @@ import { $i } from '@/account';
 
 let notes = $ref<Note[]>([]);
 let isScrolling = $ref(false);
-let scrollEl = $ref<HTMLElement>();
+let scrollEl = $shallowRef<HTMLElement>();
 
 os.apiGet('notes/featured').then(_notes => {
 	notes = _notes;