diff --git a/packages/frontend/src/components/MkDrive.vue b/packages/frontend/src/components/MkDrive.vue
index 19c98c3738..68e805a34e 100644
--- a/packages/frontend/src/components/MkDrive.vue
+++ b/packages/frontend/src/components/MkDrive.vue
@@ -88,7 +88,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 					</div>
 				</template>
 
-				<TransitionGroup
+				<MkTransitionGroup
 					tag="div"
 					:enterActiveClass="prefer.s.animation ? $style.transition_files_enterActive : ''"
 					:leaveActiveClass="prefer.s.animation ? $style.transition_files_leaveActive : ''"
@@ -107,7 +107,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 						@dragstart="onFileDragstart(file, $event)"
 						@dragend="isDragSource = false"
 					/>
-				</TransitionGroup>
+				</MkTransitionGroup>
 			</MkStickyContainer>
 			<MkButton v-show="filesPaginator.canFetchOlder.value" :class="$style.loadMore" primary rounded @click="filesPaginator.fetchOlder()">{{ i18n.ts.loadMore }}</MkButton>
 
@@ -130,7 +130,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 </template>
 
 <script lang="ts" setup>
-import { nextTick, onActivated, onBeforeUnmount, onMounted, ref, useTemplateRef, watch, computed, TransitionGroup, markRaw } from 'vue';
+import { nextTick, onActivated, onBeforeUnmount, onMounted, ref, useTemplateRef, watch, computed, markRaw } from 'vue';
 import * as Misskey from 'misskey-js';
 import MkButton from './MkButton.vue';
 import type { MenuItem } from '@/types/menu.js';
diff --git a/packages/frontend/src/components/MkReactionsViewer.vue b/packages/frontend/src/components/MkReactionsViewer.vue
index bd9ef50157..6f351bf899 100644
--- a/packages/frontend/src/components/MkReactionsViewer.vue
+++ b/packages/frontend/src/components/MkReactionsViewer.vue
@@ -4,8 +4,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 -->
 
 <template>
-<component
-	:is="prefer.s.animation ? TransitionGroup : 'div'"
+<MkTransitionGroup
 	:enterActiveClass="$style.transition_x_enterActive"
 	:leaveActiveClass="$style.transition_x_leaveActive"
 	:enterFromClass="$style.transition_x_enterFrom"
@@ -24,14 +23,13 @@ SPDX-License-Identifier: AGPL-3.0-only
 		:myReaction="props.myReaction"
 		@reactionToggled="onMockToggleReaction"
 	/>
-	<slot v-if="hasMoreReactions" name="more"/>
-</component>
+	<slot v-if="hasMoreReactions" :key="'$more'" name="more"/>
+</MkTransitionGroup>
 </template>
 
 <script lang="ts" setup>
 import * as Misskey from 'misskey-js';
 import { inject, watch, ref } from 'vue';
-import { TransitionGroup } from 'vue';
 import XReaction from '@/components/MkReactionsViewer.reaction.vue';
 import { $i } from '@/i.js';
 import { prefer } from '@/preferences.js';
diff --git a/packages/frontend/src/components/MkStreamingNotesTimeline.vue b/packages/frontend/src/components/MkStreamingNotesTimeline.vue
index bc6ebf0918..35671eb8ee 100644
--- a/packages/frontend/src/components/MkStreamingNotesTimeline.vue
+++ b/packages/frontend/src/components/MkStreamingNotesTimeline.vue
@@ -19,8 +19,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 			<div :class="$style.newBg2"></div>
 			<button class="_button" :class="$style.newButton" @click="releaseQueue()"><i class="ti ti-circle-arrow-up"></i> {{ i18n.ts.newNote }}</button>
 		</div>
-		<component
-			:is="prefer.s.animation ? TransitionGroup : 'div'"
+		<MkTransitionGroup
 			:class="$style.notes"
 			:enterActiveClass="$style.transition_x_enterActive"
 			:leaveActiveClass="$style.transition_x_leaveActive"
@@ -46,7 +45,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 				</div>
 				<MkNote v-else :class="$style.note" :note="note" :withHardMute="true" :data-scroll-anchor="note.id"/>
 			</template>
-		</component>
+		</MkTransitionGroup>
 		<button v-show="paginator.canFetchOlder.value" key="_more_" v-appear="prefer.s.enableInfiniteScroll ? paginator.fetchOlder : null" :disabled="paginator.fetchingOlder.value" class="_button" :class="$style.more" @click="paginator.fetchOlder">
 			<div v-if="!paginator.fetchingOlder.value">{{ i18n.ts.loadMore }}</div>
 			<MkLoading v-else :inline="true"/>
@@ -56,7 +55,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 </template>
 
 <script lang="ts" setup>
-import { computed, watch, onUnmounted, provide, useTemplateRef, TransitionGroup, onMounted, shallowRef, ref, markRaw } from 'vue';
+import { computed, watch, onUnmounted, provide, useTemplateRef, onMounted, shallowRef, ref, markRaw } from 'vue';
 import * as Misskey from 'misskey-js';
 import { useInterval } from '@@/js/use-interval.js';
 import { useDocumentVisibility } from '@@/js/use-document-visibility.js';
diff --git a/packages/frontend/src/components/MkStreamingNotificationsTimeline.vue b/packages/frontend/src/components/MkStreamingNotificationsTimeline.vue
index 6ee2e347a5..c6c29f6232 100644
--- a/packages/frontend/src/components/MkStreamingNotificationsTimeline.vue
+++ b/packages/frontend/src/components/MkStreamingNotificationsTimeline.vue
@@ -14,8 +14,8 @@ SPDX-License-Identifier: AGPL-3.0-only
 	</div>
 
 	<div v-else ref="rootEl">
-		<component
-			:is="prefer.s.animation ? TransitionGroup : 'div'" :class="[$style.notifications]"
+		<MkTransitionGroup
+			:class="[$style.notifications]"
 			:enterActiveClass="$style.transition_x_enterActive"
 			:leaveActiveClass="$style.transition_x_leaveActive"
 			:enterFromClass="$style.transition_x_enterFrom"
@@ -32,7 +32,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 				<MkNote v-if="['reply', 'quote', 'mention'].includes(notification.type) && 'note' in notification" :class="$style.content" :note="notification.note" :withHardMute="true"/>
 				<XNotification v-else :class="$style.content" :notification="notification" :withTime="true" :full="true"/>
 			</div>
-		</component>
+		</MkTransitionGroup>
 		<button v-show="paginator.canFetchOlder.value" key="_more_" v-appear="prefer.s.enableInfiniteScroll ? paginator.fetchOlder : null" :disabled="paginator.fetchingOlder.value" class="_button" :class="$style.more" @click="paginator.fetchOlder">
 			<div v-if="!paginator.fetchingOlder.value">{{ i18n.ts.loadMore }}</div>
 			<MkLoading v-else/>
@@ -42,7 +42,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 </template>
 
 <script lang="ts" setup>
-import { onUnmounted, onMounted, computed, useTemplateRef, TransitionGroup, markRaw, watch } from 'vue';
+import { onUnmounted, onMounted, computed, useTemplateRef, markRaw, watch } from 'vue';
 import * as Misskey from 'misskey-js';
 import { notificationTypes } from 'misskey-js';
 import { useInterval } from '@@/js/use-interval.js';
diff --git a/packages/frontend/src/components/global/MkTransitionGroup.vue b/packages/frontend/src/components/global/MkTransitionGroup.vue
new file mode 100644
index 0000000000..812d376211
--- /dev/null
+++ b/packages/frontend/src/components/global/MkTransitionGroup.vue
@@ -0,0 +1,39 @@
+<!--
+SPDX-FileCopyrightText: hazelnoot and other Sharkey contributors
+SPDX-License-Identifier: AGPL-3.0-only
+-->
+
+<template>
+<TransitionGroup v-if="animate ?? prefer.s.animation" v-bind="props" :class="props.class">
+	<slot></slot>
+</TransitionGroup>
+<component :is="tag" v-else :class="props.class">
+	<slot></slot>
+</component>
+</template>
+
+<script setup lang="ts">
+import type { TransitionGroupProps, HTMLAttributes } from 'vue';
+import { prefer } from '@/preferences.js';
+
+// This can be an inline type, but pulling it out makes TS errors clearer.
+interface MkTransitionGroupProps extends TransitionGroupProps {
+	/**
+	 * Override CSS styles for the TransitionGroup or native element.
+	 */
+	class?: HTMLAttributes['class'];
+
+	/**
+	 * If true, will render a TransitionGroup.
+	 * If false, will render a native element.
+	 * If null or undefined (default), will respect the value of prefer.s.animation.
+	 */
+	animate?: boolean | null;
+}
+
+const props = withDefaults(defineProps<MkTransitionGroupProps>(), {
+	tag: 'div',
+	class: undefined,
+	animate: undefined,
+});
+</script>
diff --git a/packages/frontend/src/components/global/StackingRouterView.vue b/packages/frontend/src/components/global/StackingRouterView.vue
index 4c56767608..2e694c09c0 100644
--- a/packages/frontend/src/components/global/StackingRouterView.vue
+++ b/packages/frontend/src/components/global/StackingRouterView.vue
@@ -4,12 +4,12 @@ SPDX-License-Identifier: AGPL-3.0-only
 -->
 
 <template>
-<TransitionGroup
-	:enterActiveClass="prefer.s.animation ? $style.transition_x_enterActive : ''"
-	:leaveActiveClass="prefer.s.animation ? $style.transition_x_leaveActive : ''"
-	:enterFromClass="prefer.s.animation ? $style.transition_x_enterFrom : ''"
-	:leaveToClass="prefer.s.animation ? $style.transition_x_leaveTo : ''"
-	:moveClass="prefer.s.animation ? $style.transition_x_move : ''"
+<MkTransitionGroup
+	:enterActiveClass="$style.transition_x_enterActive"
+	:leaveActiveClass="$style.transition_x_leaveActive"
+	:enterFromClass="$style.transition_x_enterFrom"
+	:leaveToClass="$style.transition_x_leaveTo"
+	:moveClass="$style.transition_x_move"
 	:duration="200"
 	tag="div" :class="$style.tabs"
 >
@@ -37,7 +37,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 			</div>
 		</div>
 	</div>
-</TransitionGroup>
+</MkTransitionGroup>
 </template>
 
 <script lang="ts" setup>
diff --git a/packages/frontend/src/components/index.ts b/packages/frontend/src/components/index.ts
index eadf88ebd9..d353c7617e 100644
--- a/packages/frontend/src/components/index.ts
+++ b/packages/frontend/src/components/index.ts
@@ -28,6 +28,7 @@ import MkLazy from './global/MkLazy.vue';
 import MkResult from './global/MkResult.vue';
 import MkSystemIcon from './global/MkSystemIcon.vue';
 import MkTip from './global/MkTip.vue';
+import MkTransitionGroup from './global/MkTransitionGroup.vue';
 import PageWithHeader from './global/PageWithHeader.vue';
 import PageWithAnimBg from './global/PageWithAnimBg.vue';
 import SearchMarker from './global/SearchMarker.vue';
@@ -69,6 +70,7 @@ export const components = {
 	MkResult: MkResult,
 	MkSystemIcon: MkSystemIcon,
 	MkTip: MkTip,
+	MkTransitionGroup: MkTransitionGroup,
 	PageWithHeader: PageWithHeader,
 	PageWithAnimBg: PageWithAnimBg,
 	SearchMarker: SearchMarker,
@@ -104,6 +106,7 @@ declare module '@vue/runtime-core' {
 		MkResult: typeof MkResult;
 		MkSystemIcon: typeof MkSystemIcon;
 		MkTip: typeof MkTip;
+		MkTransitionGroup: typeof MkTransitionGroup;
 		PageWithHeader: typeof PageWithHeader;
 		PageWithAnimBg: typeof PageWithAnimBg;
 		SearchMarker: typeof SearchMarker;
diff --git a/packages/frontend/src/pages/chat/XMessage.vue b/packages/frontend/src/pages/chat/XMessage.vue
index 613c4e4dcc..650bc40c4f 100644
--- a/packages/frontend/src/pages/chat/XMessage.vue
+++ b/packages/frontend/src/pages/chat/XMessage.vue
@@ -28,12 +28,12 @@ SPDX-License-Identifier: AGPL-3.0-only
 			<MkA v-if="isSearchResult && 'toRoom' in message && message.toRoom != null" :to="`/chat/room/${message.toRoomId}`">{{ message.toRoom.name }}</MkA>
 			<MkA v-if="isSearchResult && 'toUser' in message && message.toUser != null && isMe" :to="`/chat/user/${message.toUserId}`">@{{ message.toUser.username }}</MkA>
 		</div>
-		<TransitionGroup
-			:enterActiveClass="prefer.s.animation ? $style.transition_reaction_enterActive : ''"
-			:leaveActiveClass="prefer.s.animation ? $style.transition_reaction_leaveActive : ''"
-			:enterFromClass="prefer.s.animation ? $style.transition_reaction_enterFrom : ''"
-			:leaveToClass="prefer.s.animation ? $style.transition_reaction_leaveTo : ''"
-			:moveClass="prefer.s.animation ? $style.transition_reaction_move : ''"
+		<MkTransitionGroup
+			:enterActiveClass="$style.transition_reaction_enterActive"
+			:leaveActiveClass="$style.transition_reaction_leaveActive"
+			:enterFromClass="$style.transition_reaction_enterFrom"
+			:leaveToClass="$style.transition_reaction_leaveTo"
+			:moveClass="$style.transition_reaction_move"
 			tag="div" :class="$style.reactions"
 		>
 			<div v-for="record in message.reactions" :key="record.reaction + record.user.id" :class="[$style.reaction, record.user.id === $i.id ? $style.reactionMy : null]" @click="onReactionClick(record)">
@@ -45,7 +45,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 					:class="$style.reactionIcon"
 				/>
 			</div>
-		</TransitionGroup>
+		</MkTransitionGroup>
 	</div>
 </div>
 </template>
diff --git a/packages/frontend/src/pages/chat/room.vue b/packages/frontend/src/pages/chat/room.vue
index 6443616fe3..39fecdcee8 100644
--- a/packages/frontend/src/pages/chat/room.vue
+++ b/packages/frontend/src/pages/chat/room.vue
@@ -31,12 +31,12 @@ SPDX-License-Identifier: AGPL-3.0-only
 					<MkButton :class="$style.more" :wait="moreFetching" primary rounded @click="fetchMore">{{ i18n.ts.loadMore }}</MkButton>
 				</div>
 
-				<TransitionGroup
-					:enterActiveClass="prefer.s.animation ? $style.transition_x_enterActive : ''"
-					:leaveActiveClass="prefer.s.animation ? $style.transition_x_leaveActive : ''"
-					:enterFromClass="prefer.s.animation ? $style.transition_x_enterFrom : ''"
-					:leaveToClass="prefer.s.animation ? $style.transition_x_leaveTo : ''"
-					:moveClass="prefer.s.animation ? $style.transition_x_move : ''"
+				<MkTransitionGroup
+					:enterActiveClass="$style.transition_x_enterActive"
+					:leaveActiveClass="$style.transition_x_leaveActive"
+					:enterFromClass="$style.transition_x_enterFrom"
+					:leaveToClass="$style.transition_x_leaveTo"
+					:moveClass="$style.transition_x_move"
 					tag="div" class="_gaps"
 				>
 					<template v-for="item in timeline.toReversed()" :key="item.id">
@@ -47,7 +47,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 							<span>{{ item.prevText }} <i class="ti ti-chevron-down"></i></span>
 						</div>
 					</template>
-				</TransitionGroup>
+				</MkTransitionGroup>
 			</div>
 
 			<div v-if="user && (!user.canChat || user.host !== null)">
@@ -105,7 +105,6 @@ import { i18n } from '@/i18n.js';
 import { ensureSignin } from '@/i.js';
 import { misskeyApi } from '@/utility/misskey-api.js';
 import { definePage } from '@/page.js';
-import { prefer } from '@/preferences.js';
 import MkButton from '@/components/MkButton.vue';
 import { useRouter } from '@/router.js';
 import { useMutationObserver } from '@/composables/use-mutation-observer.js';
diff --git a/packages/frontend/src/ui/_common_/common.vue b/packages/frontend/src/ui/_common_/common.vue
index 37c95f2db2..e906c87973 100644
--- a/packages/frontend/src/ui/_common_/common.vue
+++ b/packages/frontend/src/ui/_common_/common.vue
@@ -65,8 +65,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 	v-on="popup.events"
 />
 
-<component
-	:is="prefer.s.animation ? TransitionGroup : 'div'"
+<MkTransitionGroup
 	tag="div"
 	:class="[$style.notifications, {
 		[$style.notificationsPosition_leftTop]: prefer.s.notificationPosition === 'leftTop',
@@ -85,7 +84,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 	<div v-for="notification in notifications" :key="notification.id" :class="$style.notification">
 		<XNotification :notification="notification"/>
 	</div>
-</component>
+</MkTransitionGroup>
 
 <XStreamIndicator/>
 
@@ -102,7 +101,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 </template>
 
 <script lang="ts" setup>
-import { defineAsyncComponent, ref, TransitionGroup } from 'vue';
+import { defineAsyncComponent, ref } from 'vue';
 import * as Misskey from 'misskey-js';
 import { swInject } from './sw-inject.js';
 import XNotification from './notification.vue';
diff --git a/packages/frontend/src/widgets/WidgetFederation.vue b/packages/frontend/src/widgets/WidgetFederation.vue
index 3e880af03b..dd6a73cdb5 100644
--- a/packages/frontend/src/widgets/WidgetFederation.vue
+++ b/packages/frontend/src/widgets/WidgetFederation.vue
@@ -10,7 +10,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 	<div class="wbrkwalb">
 		<MkLoading v-if="fetching"/>
-		<TransitionGroup v-else tag="div" :name="prefer.s.animation ? 'chart' : ''" class="instances">
+		<MkTransitionGroup v-else tag="div" name="chart" class="instances">
 			<div v-for="(instance, i) in instances" :key="instance.id" class="instance">
 				<img :src="getInstanceIcon(instance)" alt=""/>
 				<div class="body">
@@ -19,7 +19,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 				</div>
 				<MkMiniChart class="chart" :src="charts[i].requests.received"/>
 			</div>
-		</TransitionGroup>
+		</MkTransitionGroup>
 	</div>
 </MkContainer>
 </template>
@@ -36,7 +36,6 @@ import MkMiniChart from '@/components/MkMiniChart.vue';
 import { misskeyApi, misskeyApiGet } from '@/utility/misskey-api.js';
 import { i18n } from '@/i18n.js';
 import { getProxiedImageUrlNullable } from '@/utility/media-proxy.js';
-import { prefer } from '@/preferences.js';
 
 const name = 'federation';
 
diff --git a/packages/frontend/src/widgets/WidgetTrends.vue b/packages/frontend/src/widgets/WidgetTrends.vue
index dcb900b0c9..b994c2b41f 100644
--- a/packages/frontend/src/widgets/WidgetTrends.vue
+++ b/packages/frontend/src/widgets/WidgetTrends.vue
@@ -10,7 +10,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 	<div class="wbrkwala">
 		<MkLoading v-if="fetching"/>
-		<TransitionGroup v-else tag="div" :name="prefer.s.animation ? 'chart' : ''" class="tags">
+		<MkTransitionGroup v-else tag="div" name="chart" class="tags">
 			<div v-for="stat in stats" :key="stat.tag">
 				<div class="tag">
 					<MkA class="a" :to="`/tags/${ encodeURIComponent(stat.tag) }`" :title="stat.tag">#{{ stat.tag }}</MkA>
@@ -18,7 +18,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 				</div>
 				<MkMiniChart class="chart" :src="stat.chart"/>
 			</div>
-		</TransitionGroup>
+		</MkTransitionGroup>
 	</div>
 </MkContainer>
 </template>
@@ -34,7 +34,6 @@ import MkContainer from '@/components/MkContainer.vue';
 import MkMiniChart from '@/components/MkMiniChart.vue';
 import { misskeyApiGet } from '@/utility/misskey-api.js';
 import { i18n } from '@/i18n.js';
-import { prefer } from '@/preferences.js';
 
 const name = 'hashtags';