diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5678da25a..64720ef48 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -33,6 +33,7 @@
 - Fix: ロールタイムラインが保存されない問題を修正
 - Fix: api.jsonの生成ロジックを改善 #12402
 - Fix: 招待コードが使い回せる問題を修正
+- Fix: 特定の条件下でチャンネルやユーザーのノート一覧に最新のノートが表示されなくなる問題を修正
 
 ## 2023.11.1
 
diff --git a/packages/backend/src/server/api/endpoints/channels/timeline.ts b/packages/backend/src/server/api/endpoints/channels/timeline.ts
index fae4249c8..4ca7325f3 100644
--- a/packages/backend/src/server/api/endpoints/channels/timeline.ts
+++ b/packages/backend/src/server/api/endpoints/channels/timeline.ts
@@ -15,6 +15,7 @@ import { IdService } from '@/core/IdService.js';
 import { FunoutTimelineService } from '@/core/FunoutTimelineService.js';
 import { isUserRelated } from '@/misc/is-user-related.js';
 import { CacheService } from '@/core/CacheService.js';
+import { MetaService } from '@/core/MetaService.js';
 import { ApiError } from '../../error.js';
 
 export const meta = {
@@ -72,12 +73,15 @@ export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-
 		private funoutTimelineService: FunoutTimelineService,
 		private cacheService: CacheService,
 		private activeUsersChart: ActiveUsersChart,
+		private metaService: MetaService,
 	) {
 		super(meta, paramDef, async (ps, me) => {
 			const untilId = ps.untilId ?? (ps.untilDate ? this.idService.gen(ps.untilDate!) : null);
 			const sinceId = ps.sinceId ?? (ps.sinceDate ? this.idService.gen(ps.sinceDate!) : null);
 			const isRangeSpecified = untilId != null && sinceId != null;
 
+			const serverSettings = await this.metaService.fetch();
+
 			const channel = await this.channelsRepository.findOneBy({
 				id: ps.channelId,
 			});
@@ -88,7 +92,7 @@ export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-
 
 			if (me) this.activeUsersChart.read(me);
 
-			if (isRangeSpecified || sinceId == null) {
+			if (serverSettings.enableFanoutTimeline && (isRangeSpecified || sinceId == null)) {
 				const [
 					userIdsWhoMeMuting,
 				] = me ? await Promise.all([
diff --git a/packages/backend/src/server/api/endpoints/users/notes.ts b/packages/backend/src/server/api/endpoints/users/notes.ts
index a43e57292..2e7d939b1 100644
--- a/packages/backend/src/server/api/endpoints/users/notes.ts
+++ b/packages/backend/src/server/api/endpoints/users/notes.ts
@@ -15,6 +15,7 @@ import { IdService } from '@/core/IdService.js';
 import { isUserRelated } from '@/misc/is-user-related.js';
 import { QueryService } from '@/core/QueryService.js';
 import { FunoutTimelineService } from '@/core/FunoutTimelineService.js';
+import { MetaService } from '@/core/MetaService.js';
 import { ApiError } from '../../error.js';
 
 export const meta = {
@@ -71,6 +72,7 @@ export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-
 		private cacheService: CacheService,
 		private idService: IdService,
 		private funoutTimelineService: FunoutTimelineService,
+		private metaService: MetaService,
 	) {
 		super(meta, paramDef, async (ps, me) => {
 			const untilId = ps.untilId ?? (ps.untilDate ? this.idService.gen(ps.untilDate!) : null);
@@ -78,7 +80,9 @@ export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-
 			const isRangeSpecified = untilId != null && sinceId != null;
 			const isSelf = me && (me.id === ps.userId);
 
-			if (isRangeSpecified || sinceId == null) {
+			const serverSettings = await this.metaService.fetch();
+
+			if (serverSettings.enableFanoutTimeline && (isRangeSpecified || sinceId == null)) {
 				const [
 					userIdsWhoMeMuting,
 				] = me ? await Promise.all([