diff --git a/CHANGELOG.md b/CHANGELOG.md
index 6889f16b75..e133a32a9c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,4 +1,16 @@
-## 2026.4.0
+## Unreleased
+
+### General
+-
+
+### Client
+-
+
+### Server
+-
+
+
+## 2026.5.0
 
 ### General
 - Enhance: アバターデコレーションにカテゴリを設定できるように
diff --git a/package.json b/package.json
index e723cca7e4..9f5972a0b5 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
 	"name": "misskey",
-	"version": "2026.4.0-beta.2",
+	"version": "2026.5.0",
 	"codename": "nasubi",
 	"repository": {
 		"type": "git",
diff --git a/packages/backend/src/core/NoteCreateService.ts b/packages/backend/src/core/NoteCreateService.ts
index 2982cc0dd0..c364c029e8 100644
--- a/packages/backend/src/core/NoteCreateService.ts
+++ b/packages/backend/src/core/NoteCreateService.ts
@@ -63,10 +63,10 @@ type NotificationType = 'reply' | 'renote' | 'quote' | 'mention';
 class NotificationManager {
 	private notifier: { id: MiUser['id']; };
 	private note: MiNote;
-	private queue: {
+	private queue: Map<MiLocalUser['id'], {
 		target: MiLocalUser['id'];
 		reason: NotificationType;
-	}[];
+	}>;
 
 	constructor(
 		private mutingsRepository: MutingsRepository,
@@ -77,7 +77,7 @@ class NotificationManager {
 	) {
 		this.notifier = notifier;
 		this.note = note;
-		this.queue = [];
+		this.queue = new Map();
 	}
 
 	@bindThis
@@ -85,7 +85,7 @@ class NotificationManager {
 		// 自分自身へは通知しない
 		if (this.notifier.id === notifiee) return;
 
-		const exist = this.queue.find(x => x.target === notifiee);
+		const exist = this.queue.get(notifiee);
 
 		if (exist) {
 			// 「メンションされているかつ返信されている」場合は、メンションとしての通知ではなく返信としての通知にする
@@ -93,7 +93,7 @@ class NotificationManager {
 				exist.reason = reason;
 			}
 		} else {
-			this.queue.push({
+			this.queue.set(notifiee, {
 				reason: reason,
 				target: notifiee,
 			});
@@ -102,25 +102,25 @@ class NotificationManager {
 
 	@bindThis
 	public async notify() {
-		if (this.queue.length === 0) {
+		if (this.queue.size === 0) {
 			return;
 		}
 
-		const targetUserIds = this.queue.map(x => x.target);
-		let visibleUserIds: Set<string>;
+		let visibleUserIds: Set<MiUser['id']> | null;
 
 		switch (this.note.visibility) {
 			case 'public':
 			case 'home':
-				visibleUserIds = new Set(targetUserIds);
+				visibleUserIds = null;
 				break;
 
 			case 'specified':
-				visibleUserIds = new Set(this.note.visibleUserIds.filter(id => targetUserIds.includes(id)));
+				visibleUserIds = new Set(this.note.visibleUserIds);
 				break;
 
 			// TODO: フォロワー限定ノートにフォロワーではない人がメンションされた場合通知されるのが正しい挙動なのか確認（一部に挙動の不一致がありそう）。現状は通知されるためフィルタしない
 			// case 'followers': {
+			// 	const targetUserIds = this.queue.map(x => x.target);
 			// 	const followers = await this.followingsRepository.find({
 			// 		where: {
 			// 			followeeId: this.note.userId,
@@ -138,8 +138,10 @@ class NotificationManager {
 				break;
 		}
 
-		for (const x of this.queue) {
-			if (!visibleUserIds.has(x.target)) {
+		for (const x of this.queue.values()) {
+			const isVisibleToTarget = visibleUserIds === null || visibleUserIds.has(x.target);
+
+			if (!isVisibleToTarget) {
 				continue;
 			}
 
diff --git a/packages/backend/src/queue/processors/InboxProcessorService.ts b/packages/backend/src/queue/processors/InboxProcessorService.ts
index 78261a096a..0e4cd59888 100644
--- a/packages/backend/src/queue/processors/InboxProcessorService.ts
+++ b/packages/backend/src/queue/processors/InboxProcessorService.ts
@@ -96,7 +96,7 @@ export class InboxProcessorService implements OnApplicationShutdown {
 			if (userExistenceCheckApId != null) {
 				const user = await this.apDbResolverService.getUserFromApId(userExistenceCheckApId);
 				if (user == null) {
-					throw new Bull.UnrecoverableError(`skip: user not found for delete activity. ${getApId(userExistenceCheckApId)}`);
+					return `skip: user not found for delete activity. ${getApId(userExistenceCheckApId)}`;
 				}
 			}
 		}
diff --git a/packages/frontend/src/components/MkUploaderItems.vue b/packages/frontend/src/components/MkUploaderItems.vue
index a196189c8b..0a7c154605 100644
--- a/packages/frontend/src/components/MkUploaderItems.vue
+++ b/packages/frontend/src/components/MkUploaderItems.vue
@@ -6,42 +6,42 @@ SPDX-License-Identifier: AGPL-3.0-only
 <template>
 <div :class="$style.root" class="_gaps_s">
 	<div
-		v-for="item in props.items"
-		:key="item.id"
+		v-for="displayItem in displayItems"
+		:key="displayItem.item.id"
 		v-panel
-		:class="[$style.item, { [$style.itemWaiting]: item.preprocessing, [$style.itemCompleted]: item.uploaded, [$style.itemFailed]: item.uploadFailed }]"
+		:class="[$style.item, { [$style.itemWaiting]: displayItem.item.preprocessing, [$style.itemCompleted]: displayItem.item.uploaded, [$style.itemFailed]: displayItem.item.uploadFailed }]"
 		:style="{
-			'--p': item.progress != null ? `${item.progress.value / item.progress.max * 100}%` : '0%',
-			'--pp': item.preprocessProgress != null ? `${item.preprocessProgress * 100}%` : '100%',
+			'--p': displayItem.item.progress != null ? `${displayItem.item.progress.value / displayItem.item.progress.max * 100}%` : '0%',
+			'--pp': displayItem.item.preprocessProgress != null ? `${displayItem.item.preprocessProgress * 100}%` : '100%',
 		}"
-		@contextmenu.prevent.stop="onContextmenu(item, $event)"
+		@contextmenu.prevent.stop="onContextmenu(displayItem.item, $event)"
 	>
 		<div :class="$style.itemInner">
 			<div :class="$style.itemActionWrapper">
-				<MkButton :iconOnly="true" rounded @click="emit('showMenu', item, $event)"><i class="ti ti-dots"></i></MkButton>
+				<MkButton :iconOnly="true" rounded @click="emit('showMenu', displayItem.item, $event)"><i class="ti ti-dots"></i></MkButton>
 			</div>
-			<div :class="$style.itemThumbnail" :style="{ backgroundImage: `url(${ item.thumbnail })` }" @click="onThumbnailClick(item, $event)"></div>
+			<div :class="$style.itemThumbnail" :style="{ backgroundImage: `url(${ displayItem.item.thumbnail })` }" @click="onThumbnailClick(displayItem.item, $event)"></div>
 			<div :class="$style.itemBody">
 				<div>
-					<i v-if="item.isSensitive" style="color: var(--MI_THEME-warn); margin-right: 0.5em;" class="ti ti-eye-exclamation"></i>
+					<i v-if="displayItem.item.isSensitive" style="color: var(--MI_THEME-warn); margin-right: 0.5em;" class="ti ti-eye-exclamation"></i>
 					<MkCondensedLine :minScale="2 / 3">
-						<span>{{ getUploadName(item).lastIndexOf('.') != -1 ? getUploadName(item).substring(0, getUploadName(item).lastIndexOf('.')) : getUploadName(item) }}</span>
-						<span v-if="getUploadName(item).lastIndexOf('.') != -1" style="opacity: 0.5;">{{ getUploadName(item).substring(getUploadName(item).lastIndexOf('.')) }}</span>
+						<span>{{ displayItem.nameParts.baseName }}</span>
+						<span v-if="displayItem.nameParts.extension != null" style="opacity: 0.5;">{{ displayItem.nameParts.extension }}</span>
 					</MkCondensedLine>
 				</div>
 				<div :class="$style.itemInfo">
-					<span>{{ item.file.type }}</span>
-					<span v-if="item.compressedSize">({{ i18n.tsx._uploader.compressedToX({ x: bytes(item.compressedSize) }) }} = {{ i18n.tsx._uploader.savedXPercent({ x: Math.round((1 - item.compressedSize / item.file.size) * 100) }) }})</span>
-					<span v-else>{{ bytes(item.file.size) }}</span>
-					<span v-if="item.preprocessing">{{ i18n.ts.preprocessing }}<MkLoading inline em style="margin-left: 0.5em;"/></span>
+					<span>{{ displayItem.item.file.type }}</span>
+					<span v-if="displayItem.item.compressedSize">({{ i18n.tsx._uploader.compressedToX({ x: bytes(displayItem.item.compressedSize) }) }} = {{ i18n.tsx._uploader.savedXPercent({ x: Math.round((1 - displayItem.item.compressedSize / displayItem.item.file.size) * 100) }) }})</span>
+					<span v-else>{{ bytes(displayItem.item.file.size) }}</span>
+					<span v-if="displayItem.item.preprocessing">{{ i18n.ts.preprocessing }}<MkLoading inline em style="margin-left: 0.5em;"/></span>
 				</div>
 				<div>
 				</div>
 			</div>
 			<div :class="$style.itemIconWrapper">
-				<MkSystemIcon v-if="item.uploading" :class="$style.itemIcon" type="waiting"/>
-				<MkSystemIcon v-else-if="item.uploaded" :class="$style.itemIcon" type="success"/>
-				<MkSystemIcon v-else-if="item.uploadFailed" :class="$style.itemIcon" type="error"/>
+				<MkSystemIcon v-if="displayItem.item.uploading" :class="$style.itemIcon" type="waiting"/>
+				<MkSystemIcon v-else-if="displayItem.item.uploaded" :class="$style.itemIcon" type="success"/>
+				<MkSystemIcon v-else-if="displayItem.item.uploadFailed" :class="$style.itemIcon" type="error"/>
 			</div>
 		</div>
 	</div>
@@ -49,6 +49,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 </template>
 
 <script lang="ts" setup>
+import { computed } from 'vue';
 import { isLink } from '@@/js/is-link.js';
 import { getUploadName } from '@/composables/use-uploader.js';
 import type { UploaderItem } from '@/composables/use-uploader.js';
@@ -60,11 +61,36 @@ const props = defineProps<{
 	items: UploaderItem[];
 }>();
 
+const displayItems = computed(() => props.items.map(item => ({
+	item,
+	nameParts: getUploadNameParts(item),
+})));
+
 const emit = defineEmits<{
 	(ev: 'showMenu', item: UploaderItem, event: PointerEvent): void;
 	(ev: 'showMenuViaContextmenu', item: UploaderItem, event: PointerEvent): void;
 }>();
 
+function getUploadNameParts(item: UploaderItem): {
+	baseName: string;
+	extension: string | null;
+} {
+	const name = getUploadName(item);
+	const extensionIndex = name.lastIndexOf('.');
+
+	if (extensionIndex === -1) {
+		return {
+			baseName: name,
+			extension: null,
+		};
+	}
+
+	return {
+		baseName: name.substring(0, extensionIndex),
+		extension: name.substring(extensionIndex),
+	};
+}
+
 function onContextmenu(item: UploaderItem, ev: PointerEvent) {
 	if (ev.target && isLink(ev.target as HTMLElement)) return;
 	if (window.getSelection()?.toString() !== '') return;
diff --git a/packages/frontend/src/os.ts b/packages/frontend/src/os.ts
index 9d199738f6..ee18b3e2fd 100644
--- a/packages/frontend/src/os.ts
+++ b/packages/frontend/src/os.ts
@@ -194,7 +194,6 @@ export function popup<T extends Component>(
 
 	const id = ++popupIdCount;
 	const dispose = () => {
-		// このsetTimeoutが無いと挙動がおかしくなる(autocompleteが閉じなくなる)。Vueのバグ？
 		nextTick(() => {
 			popups.value = popups.value.filter(p => p.id !== id);
 		});
diff --git a/packages/frontend/src/utility/emoji-picker.ts b/packages/frontend/src/utility/emoji-picker.ts
index 2ec8bb9779..c3d5ca9b35 100644
--- a/packages/frontend/src/utility/emoji-picker.ts
+++ b/packages/frontend/src/utility/emoji-picker.ts
@@ -3,9 +3,9 @@
  * SPDX-License-Identifier: AGPL-3.0-only
  */
 
-import { markRaw, shallowRef, ref, watch } from 'vue';
-import type MkEmojiPickerDialog__TypeReferenceOnly from '@/components/MkEmojiPickerDialog.vue';
-import { popup, popupAsyncWithDialog } from '@/os.js';
+import { shallowRef, ref, watch } from 'vue';
+import MkEmojiPickerDialog from '@/components/MkEmojiPickerDialog.vue';
+import { popup } from '@/os.js';
 import { prefer } from '@/preferences.js';
 
 /**
@@ -15,7 +15,6 @@ import { prefer } from '@/preferences.js';
  * 一度表示したダイアログを連続で使用できることが望ましいシーンでの利用が想定される。
  */
 class EmojiPicker {
-	private loadedComponent: typeof MkEmojiPickerDialog__TypeReferenceOnly | null = null;
 	private emojisRef = ref<string[]>([]);
 
 	constructor() {
@@ -23,15 +22,6 @@ class EmojiPicker {
 	}
 
 	public init() {
-		// コンポーネントをプリロードしてキャッシュしておく。
-		// iOS PWA では await を挟むとユーザーアクティベーションが失われfocusが効かなくなるため、
-		// show() 呼び出し時には同期的に popup() できるよう事前にコンポーネントを解決しておく。
-		import('@/components/MkEmojiPickerDialog.vue').then(m => {
-			this.loadedComponent = markRaw(m.default);
-		}).catch(err => {
-			console.error('[EmojiPicker] Failed to preload MkEmojiPickerDialog:', err);
-		});
-
 		watch([prefer.r.emojiPaletteForMain, prefer.r.emojiPalettes], () => {
 			this.emojisRef.value = prefer.s.emojiPaletteForMain == null ? prefer.s.emojiPalettes[0].emojis : prefer.s.emojiPalettes.find(palette => palette.id === prefer.s.emojiPaletteForMain)?.emojis ?? [];
 		}, {
@@ -46,46 +36,21 @@ class EmojiPicker {
 	) {
 		const anchorRef = shallowRef(anchorElement);
 
-		if (this.loadedComponent) {
-			// コンポーネント解決済みのため同期的に popup() できる。
-			// ユーザーアクティベーションコンテキストが維持されiOSでもfocusが機能する。
-			const { dispose } = popup(this.loadedComponent, {
-				anchorElement: anchorRef,
-				pinnedEmojis: this.emojisRef,
-				asReactionPicker: false,
-				choseAndClose: false,
-			}, {
-				done: (emoji: string) => {
-					if (onChosen) onChosen(emoji);
-				},
-				closed: () => {
-					if (onClosed) onClosed();
-					dispose();
-				},
-			});
-		} else {
-			// フォールバック: 初回タップがプリロード完了前
-			popupAsyncWithDialog(
-				import('@/components/MkEmojiPickerDialog.vue').then(m => {
-					this.loadedComponent = markRaw(m.default);
-					return this.loadedComponent;
-				}),
-				{
-					anchorElement: anchorRef,
-					pinnedEmojis: this.emojisRef,
-					asReactionPicker: false,
-					choseAndClose: false,
-				},
-				{
-					done: (emoji: string) => {
-						if (onChosen) onChosen(emoji);
-					},
-					closed: () => {
-						if (onClosed) onClosed();
-					},
-				},
-			);
-		}
+		// defineAsyncComponentはiOS等でユーザーアクティベーションが失われてfocusが効かなくなるため使用不可
+		const { dispose } = popup(MkEmojiPickerDialog, {
+			anchorElement: anchorRef,
+			pinnedEmojis: this.emojisRef,
+			asReactionPicker: false,
+			choseAndClose: false,
+		}, {
+			done: (emoji: string) => {
+				if (onChosen) onChosen(emoji);
+			},
+			closed: () => {
+				if (onClosed) onClosed();
+				dispose();
+			},
+		});
 	}
 }
 
diff --git a/packages/frontend/src/utility/reaction-picker.ts b/packages/frontend/src/utility/reaction-picker.ts
index 49114664cf..c1bdf19758 100644
--- a/packages/frontend/src/utility/reaction-picker.ts
+++ b/packages/frontend/src/utility/reaction-picker.ts
@@ -4,13 +4,12 @@
  */
 
 import * as Misskey from 'misskey-js';
-import { markRaw, shallowRef, ref, watch } from 'vue';
-import type MkEmojiPickerDialog__TypeReferenceOnly from '@/components/MkEmojiPickerDialog.vue';
-import { popup, popupAsyncWithDialog } from '@/os.js';
+import { shallowRef, ref, watch } from 'vue';
+import MkEmojiPickerDialog from '@/components/MkEmojiPickerDialog.vue';
+import { popup } from '@/os.js';
 import { prefer } from '@/preferences.js';
 
 class ReactionPicker {
-	private loadedComponent: typeof MkEmojiPickerDialog__TypeReferenceOnly | null = null;
 	private reactionsRef = ref<string[]>([]);
 
 	constructor() {
@@ -18,15 +17,6 @@ class ReactionPicker {
 	}
 
 	public init() {
-		// コンポーネントをプリロードしてキャッシュしておく。
-		// iOS PWA では await を挟むとユーザーアクティベーションが失われfocusが効かなくなるため、
-		// show() 呼び出し時には同期的に popup() できるよう事前にコンポーネントを解決しておく。
-		import('@/components/MkEmojiPickerDialog.vue').then(m => {
-			this.loadedComponent = markRaw(m.default);
-		}).catch(err => {
-			console.error('[ReactionPicker] Failed to preload MkEmojiPickerDialog:', err);
-		});
-
 		watch([prefer.r.emojiPaletteForReaction, prefer.r.emojiPalettes], () => {
 			this.reactionsRef.value = prefer.s.emojiPaletteForReaction == null ? prefer.s.emojiPalettes[0].emojis : prefer.s.emojiPalettes.find(palette => palette.id === prefer.s.emojiPaletteForReaction)?.emojis ?? [];
 		}, {
@@ -43,46 +33,21 @@ class ReactionPicker {
 		const anchorRef = shallowRef(anchorElement);
 		const targetNoteRef = ref(targetNote);
 
-		if (this.loadedComponent) {
-			// 通常パス: コンポーネント解決済みのため同期的に popup() できる。
-			// ユーザーアクティベーションコンテキストが維持されiOSでもfocusが機能する。
-			const { dispose } = popup(this.loadedComponent, {
-				anchorElement: anchorRef,
-				pinnedEmojis: this.reactionsRef,
-				asReactionPicker: true,
-				targetNote: targetNoteRef,
-			}, {
-				done: (reaction: string) => {
-					if (onChosen) onChosen(reaction);
-				},
-				closed: () => {
-					if (onClosed) onClosed();
-					dispose();
-				},
-			});
-		} else {
-			// フォールバック: 初回タップがプリロード完了前
-			popupAsyncWithDialog(
-				import('@/components/MkEmojiPickerDialog.vue').then(m => {
-					this.loadedComponent = markRaw(m.default);
-					return this.loadedComponent;
-				}),
-				{
-					anchorElement: anchorRef,
-					pinnedEmojis: this.reactionsRef,
-					asReactionPicker: true,
-					targetNote: targetNoteRef,
-				},
-				{
-					done: (reaction: string) => {
-						if (onChosen) onChosen(reaction);
-					},
-					closed: () => {
-						if (onClosed) onClosed();
-					},
-				},
-			);
-		}
+		// defineAsyncComponentはiOS等でユーザーアクティベーションが失われてfocusが効かなくなるため使用不可
+		const { dispose } = popup(MkEmojiPickerDialog, {
+			anchorElement: anchorRef,
+			pinnedEmojis: this.reactionsRef,
+			asReactionPicker: true,
+			targetNote: targetNoteRef,
+		}, {
+			done: (reaction: string) => {
+				if (onChosen) onChosen(reaction);
+			},
+			closed: () => {
+				if (onClosed) onClosed();
+				dispose();
+			},
+		});
 	}
 }
 
diff --git a/packages/misskey-js/package.json b/packages/misskey-js/package.json
index e659cf422a..0da03c5d9c 100644
--- a/packages/misskey-js/package.json
+++ b/packages/misskey-js/package.json
@@ -1,7 +1,7 @@
 {
 	"type": "module",
 	"name": "misskey-js",
-	"version": "2026.4.0-beta.2",
+	"version": "2026.5.0",
 	"description": "Misskey SDK for JavaScript",
 	"license": "MIT",
 	"main": "./built/index.js",