diff --git a/locales/en-US.yml b/locales/en-US.yml
index c18e1281df..13ddcc4b5c 100644
--- a/locales/en-US.yml
+++ b/locales/en-US.yml
@@ -291,6 +291,7 @@ removeAreYouSure: "Are you sure that you want to remove \"{x}\"?"
 deleteAreYouSure: "Are you sure that you want to delete \"{x}\"?"
 resetAreYouSure: "Really reset?"
 areYouSure: "Are you sure?"
+confirmRemoteUrl: "Are you sure that you want to go to \"{x}\"?"
 saved: "Saved"
 messaging: "Chat"
 upload: "Upload"
diff --git a/locales/index.d.ts b/locales/index.d.ts
index 9f0378a23f..0239da7071 100644
--- a/locales/index.d.ts
+++ b/locales/index.d.ts
@@ -1180,6 +1180,10 @@ export interface Locale extends ILocale {
      * よろしいですか？
      */
     "areYouSure": string;
+    /**
+     * 「{x}」を開きますか？
+     */
+    "confirmRemoteUrl": ParameterizedString<"x">;
     /**
      * 保存しました
      */
diff --git a/locales/ja-JP.yml b/locales/ja-JP.yml
index 57fdeb461f..caed03910f 100644
--- a/locales/ja-JP.yml
+++ b/locales/ja-JP.yml
@@ -291,6 +291,7 @@ removeAreYouSure: "「{x}」を削除しますか？"
 deleteAreYouSure: "「{x}」を削除しますか？"
 resetAreYouSure: "リセットしますか？"
 areYouSure: "よろしいですか？"
+confirmRemoteUrl: "「{x}」を開きますか？"
 saved: "保存しました"
 messaging: "チャット"
 upload: "アップロード"
diff --git a/packages/frontend/src/components/MkDialog.vue b/packages/frontend/src/components/MkDialog.vue
index 825c1d0513..7dc381b662 100644
--- a/packages/frontend/src/components/MkDialog.vue
+++ b/packages/frontend/src/components/MkDialog.vue
@@ -26,7 +26,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 			<MkLoading v-else-if="type === 'waiting'" :class="$style.iconInner" :em="true"/>
 		</div>
 		<header v-if="title" :class="$style.title"><Mfm :text="title"/></header>
-		<div v-if="text" :class="$style.text"><Mfm :text="text" :isBlock="true" /></div>
+		<div v-if="text" :class="$style.text"><Mfm :text="text" :isBlock="true" :plain="plain" /></div>
 		<MkInput v-if="input" v-model="inputValue" autofocus :type="input.type || 'text'" :placeholder="input.placeholder || undefined" :autocomplete="input.autocomplete" @keydown="onInputKeydown">
 			<template v-if="input.type === 'password'" #prefix><i class="ti ti-lock"></i></template>
 			<template #caption>
@@ -105,6 +105,7 @@ const props = withDefaults(defineProps<{
 	cancelableByBgClick?: boolean;
 	okText?: string;
 	cancelText?: string;
+	plain?: boolean;
 }>(), {
 	type: 'info',
 	showOkButton: true,
diff --git a/packages/frontend/src/components/MkLink.vue b/packages/frontend/src/components/MkLink.vue
index 07cf9e0c37..d2819f9f4c 100644
--- a/packages/frontend/src/components/MkLink.vue
+++ b/packages/frontend/src/components/MkLink.vue
@@ -8,6 +8,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 	:is="self ? 'MkA' : 'a'" ref="el" style="word-break: break-all;" class="_link" :[attr]="self ? url.substring(local.length) : url" :rel="rel ?? 'nofollow noopener'" :target="target"
 	:behavior="props.navigationBehavior"
 	:title="url"
+	@click.prevent="self ? true : promptConfirm()"
 	@click.stop
 >
 	<slot></slot>
@@ -22,6 +23,7 @@ import { useTooltip } from '@/scripts/use-tooltip.js';
 import * as os from '@/os.js';
 import { isEnabledUrlPreview } from '@/instance.js';
 import { MkABehavior } from '@/components/global/MkA.vue';
+import { i18n } from '@/i18n.js';
 
 const props = withDefaults(defineProps<{
 	url: string;
@@ -47,6 +49,16 @@ if (isEnabledUrlPreview.value) {
 		});
 	});
 }
+
+async function promptConfirm() {
+	const { canceled } = await os.confirm({
+		type: 'question',
+		text: i18n.tsx.confirmRemoteUrl({ x: props.url }),
+		plain: true,
+	});
+	if (canceled) return;
+	window.open(props.url, '_blank', 'nofollow noopener popup=false');
+}
 </script>
 
 <style lang="scss" module>
diff --git a/packages/frontend/src/components/MkMediaBanner.vue b/packages/frontend/src/components/MkMediaBanner.vue
index ed8d43273f..77a86ff2fb 100644
--- a/packages/frontend/src/components/MkMediaBanner.vue
+++ b/packages/frontend/src/components/MkMediaBanner.vue
@@ -5,12 +5,12 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <template>
 <div :class="$style.root">
-	<div v-if="media.isSensitive && hide" :class="$style.sensitive" @click="show">
+	<MkMediaAudio v-if="media.type.startsWith('audio') && media.type !== 'audio/midi'" :audio="media"/>
+	<div v-else-if="media.isSensitive && hide" :class="$style.sensitive" @click="show">
 		<span style="font-size: 1.6em;"><i class="ti ti-alert-triangle"></i></span>
 		<b>{{ i18n.ts.sensitive }}</b>
 		<span>{{ i18n.ts.clickToShow }}</span>
 	</div>
-	<MkMediaAudio v-else-if="media.type.startsWith('audio') && media.type !== 'audio/midi'" :audio="media"/>
 	<a
 		v-else :class="$style.download"
 		:href="media.url"
diff --git a/packages/frontend/src/components/MkNote.vue b/packages/frontend/src/components/MkNote.vue
index e2f0a4e492..edae1e91b2 100644
--- a/packages/frontend/src/components/MkNote.vue
+++ b/packages/frontend/src/components/MkNote.vue
@@ -565,7 +565,8 @@ function quote() {
 		os.post({
 			renote: appearNote.value,
 			channel: appearNote.value.channel,
-		}).then(() => {
+		}).then((cancelled) => {
+			if (cancelled) return;
 			misskeyApi('notes/renotes', {
 				noteId: appearNote.value.id,
 				userId: $i?.id,
@@ -589,7 +590,8 @@ function quote() {
 	} else {
 		os.post({
 			renote: appearNote.value,
-		}).then(() => {
+		}).then((cancelled) => {
+			if (cancelled) return;
 			misskeyApi('notes/renotes', {
 				noteId: appearNote.value.id,
 				userId: $i?.id,
diff --git a/packages/frontend/src/components/MkNoteDetailed.vue b/packages/frontend/src/components/MkNoteDetailed.vue
index 64559ef265..123e94c3e0 100644
--- a/packages/frontend/src/components/MkNoteDetailed.vue
+++ b/packages/frontend/src/components/MkNoteDetailed.vue
@@ -550,7 +550,8 @@ function quote() {
 		os.post({
 			renote: appearNote.value,
 			channel: appearNote.value.channel,
-		}).then(() => {
+		}).then((cancelled) => {
+			if (cancelled) return;
 			misskeyApi('notes/renotes', {
 				noteId: appearNote.value.id,
 				userId: $i?.id,
@@ -574,7 +575,8 @@ function quote() {
 	} else {
 		os.post({
 			renote: appearNote.value,
-		}).then(() => {
+		}).then((cancelled) => {
+			if (cancelled) return;
 			misskeyApi('notes/renotes', {
 				noteId: appearNote.value.id,
 				userId: $i?.id,
diff --git a/packages/frontend/src/components/MkNoteSub.vue b/packages/frontend/src/components/MkNoteSub.vue
index 9caed62ce2..45276839ad 100644
--- a/packages/frontend/src/components/MkNoteSub.vue
+++ b/packages/frontend/src/components/MkNoteSub.vue
@@ -339,7 +339,8 @@ function quote() {
 		os.post({
 			renote: appearNote.value,
 			channel: appearNote.value.channel,
-		}).then(() => {
+		}).then((cancelled) => {
+			if (cancelled) return;
 			misskeyApi('notes/renotes', {
 				noteId: props.note.id,
 				userId: $i.id,
@@ -363,7 +364,8 @@ function quote() {
 	} else {
 		os.post({
 			renote: appearNote.value,
-		}).then(() => {
+		}).then((cancelled) => {
+			if (cancelled) return;
 			misskeyApi('notes/renotes', {
 				noteId: props.note.id,
 				userId: $i.id,
diff --git a/packages/frontend/src/components/MkPostFormDialog.vue b/packages/frontend/src/components/MkPostFormDialog.vue
index 947c0ee4d0..811a6378f2 100644
--- a/packages/frontend/src/components/MkPostFormDialog.vue
+++ b/packages/frontend/src/components/MkPostFormDialog.vue
@@ -5,7 +5,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <template>
 <MkModal ref="modal" :preferType="'dialog'" @click="modal?.close()" @closed="onModalClosed()" @esc="modal?.close()">
-	<MkPostForm ref="form" :class="$style.form" v-bind="props" autofocus freezeAfterPosted @posted="onPosted" @cancel="modal?.close()" @esc="modal?.close()"/>
+	<MkPostForm ref="form" :class="$style.form" v-bind="props" autofocus freezeAfterPosted @posted="onPosted" @cancel="onCancel" @esc="onCancel"/>
 </MkModal>
 </template>
 
@@ -37,7 +37,7 @@ const props = withDefaults(defineProps<{
 });
 
 const emit = defineEmits<{
-	(ev: 'closed'): void;
+	(ev: 'closed', cancelled: boolean): void;
 }>();
 
 const modal = shallowRef<InstanceType<typeof MkModal>>();
@@ -47,10 +47,18 @@ function onPosted() {
 	modal.value?.close({
 		useSendAnimation: true,
 	});
+	emit('closed', false);
+}
+
+function onCancel() {
+	// for some reason onModalClosed does not get called properly when closing the model through other functions.
+	modal.value?.close();
+	// emit is required so that the dialog gets properly disposed otherwise it will float around as a "zombie"
+	emit('closed', true);
 }
 
 function onModalClosed() {
-	emit('closed');
+	emit('closed', true);
 }
 </script>
 
diff --git a/packages/frontend/src/components/SkNote.vue b/packages/frontend/src/components/SkNote.vue
index b02d902482..3d5c5f5fae 100644
--- a/packages/frontend/src/components/SkNote.vue
+++ b/packages/frontend/src/components/SkNote.vue
@@ -565,7 +565,8 @@ function quote() {
 		os.post({
 			renote: appearNote.value,
 			channel: appearNote.value.channel,
-		}).then(() => {
+		}).then((cancelled) => {
+			if (cancelled) return;
 			misskeyApi('notes/renotes', {
 				noteId: appearNote.value.id,
 				userId: $i?.id,
@@ -589,7 +590,8 @@ function quote() {
 	} else {
 		os.post({
 			renote: appearNote.value,
-		}).then(() => {
+		}).then((cancelled) => {
+			if (cancelled) return;
 			misskeyApi('notes/renotes', {
 				noteId: appearNote.value.id,
 				userId: $i?.id,
diff --git a/packages/frontend/src/components/SkNoteDetailed.vue b/packages/frontend/src/components/SkNoteDetailed.vue
index cca6c7a40c..5b85e21bac 100644
--- a/packages/frontend/src/components/SkNoteDetailed.vue
+++ b/packages/frontend/src/components/SkNoteDetailed.vue
@@ -559,7 +559,8 @@ function quote() {
 		os.post({
 			renote: appearNote.value,
 			channel: appearNote.value.channel,
-		}).then(() => {
+		}).then((cancelled) => {
+			if (cancelled) return;
 			misskeyApi('notes/renotes', {
 				noteId: appearNote.value.id,
 				userId: $i?.id,
@@ -583,7 +584,8 @@ function quote() {
 	} else {
 		os.post({
 			renote: appearNote.value,
-		}).then(() => {
+		}).then((cancelled) => {
+			if (cancelled) return;
 			misskeyApi('notes/renotes', {
 				noteId: appearNote.value.id,
 				userId: $i?.id,
diff --git a/packages/frontend/src/components/SkNoteSub.vue b/packages/frontend/src/components/SkNoteSub.vue
index c2986b2524..fac35191b9 100644
--- a/packages/frontend/src/components/SkNoteSub.vue
+++ b/packages/frontend/src/components/SkNoteSub.vue
@@ -353,7 +353,8 @@ function quote() {
 		os.post({
 			renote: appearNote.value,
 			channel: appearNote.value.channel,
-		}).then(() => {
+		}).then((cancelled) => {
+			if (cancelled) return;
 			misskeyApi('notes/renotes', {
 				noteId: props.note.id,
 				userId: $i.id,
@@ -377,7 +378,8 @@ function quote() {
 	} else {
 		os.post({
 			renote: appearNote.value,
-		}).then(() => {
+		}).then((cancelled) => {
+			if (cancelled) return;
 			misskeyApi('notes/renotes', {
 				noteId: props.note.id,
 				userId: $i.id,
diff --git a/packages/frontend/src/os.ts b/packages/frontend/src/os.ts
index f6f4d62d50..bd96a0655e 100644
--- a/packages/frontend/src/os.ts
+++ b/packages/frontend/src/os.ts
@@ -245,6 +245,7 @@ export function confirm(props: {
 	text?: string;
 	okText?: string;
 	cancelText?: string;
+	plain?: boolean;
 }): Promise<{ canceled: boolean }> {
 	return new Promise(resolve => {
 		const { dispose } = popup(MkDialog, {
@@ -691,7 +692,7 @@ export function contextMenu(items: MenuItem[], ev: MouseEvent): Promise<void> {
 	}));
 }
 
-export function post(props: Record<string, any> = {}): Promise<void> {
+export function post(props: Record<string, any> = {}): Promise<void | boolean> {
 	pleaseLogin(undefined, (props.initialText || props.initialNote ? {
 		type: 'share',
 		params: {
@@ -709,8 +710,8 @@ export function post(props: Record<string, any> = {}): Promise<void> {
 		//       複数のpost formを開いたときに場合によってはエラーになる
 		//       もちろん複数のpost formを開けること自体Misskeyサイドのバグなのだが
 		const { dispose } = popup(MkPostFormDialog, props, {
-			closed: () => {
-				resolve();
+			closed: (cancelled) => {
+				resolve(cancelled);
 				dispose();
 			},
 		});
diff --git a/packages/frontend/src/pages/drive.file.info.vue b/packages/frontend/src/pages/drive.file.info.vue
index 4ed2a67678..39e61aa218 100644
--- a/packages/frontend/src/pages/drive.file.info.vue
+++ b/packages/frontend/src/pages/drive.file.info.vue
@@ -45,7 +45,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 				</MkKeyValue>
 			</button>
 			<button class="_button" :class="$style.kvEditBtn" @click="describe()">
-				<MkKeyValue>
+				<MkKeyValue :class="$style.multiline">
 					<template #key>{{ i18n.ts.description }}</template>
 					<template #value>{{ file.comment ? file.comment : `(${i18n.ts.none})` }}<i class="ti ti-pencil" :class="$style.kvEditIcon"></i></template>
 				</MkKeyValue>
@@ -313,6 +313,10 @@ onMounted(async () => {
 	padding: .5rem 1rem;
 }
 
+.multiline {
+	white-space: pre-wrap;
+}
+
 .kvEditBtn {
 	text-align: start;
 	display: block;
diff --git a/packages/frontend/src/plugin.ts b/packages/frontend/src/plugin.ts
index 81233a5a5e..9640c988eb 100644
--- a/packages/frontend/src/plugin.ts
+++ b/packages/frontend/src/plugin.ts
@@ -6,7 +6,8 @@
 import { ref } from 'vue';
 import { Interpreter, Parser, utils, values } from '@syuilo/aiscript';
 import { aiScriptReadline, createAiScriptEnv } from '@/scripts/aiscript/api.js';
-import { inputText } from '@/os.js';
+import * as os from '@/os.js';
+import { i18n } from '@/i18n.js';
 import { Plugin, noteActions, notePostInterruptors, noteViewInterruptors, postFormActions, userActions, pageViewInterruptors } from '@/store.js';
 
 const parser = new Parser();
@@ -91,8 +92,16 @@ function createPluginEnv(opts: { plugin: Plugin; storageKey: string }): Record<s
 			registerPageViewInterruptor({ pluginId: opts.plugin.id, handler });
 		}),
 		'Plugin:open_url': values.FN_NATIVE(([url]) => {
-			utils.assertString(url);
-			window.open(url.value, '_blank', 'noopener');
+			(async () => {
+				utils.assertString(url);
+				const { canceled } = await os.confirm({
+					type: 'question',
+					text: i18n.tsx.confirmRemoteUrl({ x: url.value }),
+					plain: true,
+				});
+				if (canceled) return;
+				window.open(url.value, '_blank', 'noopener');
+			})();
 		}),
 		'Plugin:config': values.OBJ(config),
 	};
diff --git a/packages/frontend/src/ui/classic.sidebar.vue b/packages/frontend/src/ui/classic.sidebar.vue
index d1cc10558e..dbb7590978 100644
--- a/packages/frontend/src/ui/classic.sidebar.vue
+++ b/packages/frontend/src/ui/classic.sidebar.vue
@@ -166,7 +166,6 @@ watch(defaultStore.reactiveState.menuDisplay, () => {
 		top: 0;
 		z-index: 1;
 		padding: 16px 0;
-		background: var(--bg);
 
 		> .button {
 			min-width: 0;