diff --git a/packages/frontend/src/components/MkDrive.vue b/packages/frontend/src/components/MkDrive.vue
index 25c10a65cf..83169496ff 100644
--- a/packages/frontend/src/components/MkDrive.vue
+++ b/packages/frontend/src/components/MkDrive.vue
@@ -293,7 +293,7 @@ function onDragleave() {
 	draghover.value = false;
 }
 
-function onDrop(ev: DragEvent) {
+function onDrop(ev: DragEvent): void | boolean {
 	draghover.value = false;
 
 	if (!ev.dataTransfer) return;
diff --git a/packages/frontend/src/components/MkTabs.vue b/packages/frontend/src/components/MkTabs.vue
index 75cf84e918..57fb6548ba 100644
--- a/packages/frontend/src/components/MkTabs.vue
+++ b/packages/frontend/src/components/MkTabs.vue
@@ -39,17 +39,10 @@ SPDX-License-Identifier: AGPL-3.0-only
 export type Tab = {
 	key: string;
 	onClick?: (ev: MouseEvent) => void;
-} & (
-	| {
-		iconOnly?: false;
-		title: string;
-		icon?: string;
-	}
-	| {
-		iconOnly: true;
-		icon: string;
-	}
-);
+	iconOnly?: boolean;
+	title: string;
+	icon?: string;
+};
 </script>
 
 <script lang="ts" setup>
diff --git a/packages/frontend/src/components/global/MkPageHeader.tabs.vue b/packages/frontend/src/components/global/MkPageHeader.tabs.vue
index ae051eaf2c..a1b57f30d9 100644
--- a/packages/frontend/src/components/global/MkPageHeader.tabs.vue
+++ b/packages/frontend/src/components/global/MkPageHeader.tabs.vue
@@ -39,17 +39,10 @@ SPDX-License-Identifier: AGPL-3.0-only
 export type Tab = {
 	key: string;
 	onClick?: (ev: MouseEvent) => void;
-} & (
-	| {
-		iconOnly?: false;
-		title: string;
-		icon?: string;
-	}
-	| {
-		iconOnly: true;
-		icon: string;
-	}
-);
+	iconOnly?: boolean;
+	title: string;
+	icon?: string;
+};
 </script>
 
 <script lang="ts" setup>
diff --git a/packages/frontend/src/pages/about.emojis.vue b/packages/frontend/src/pages/about.emojis.vue
index b166dfd940..43133bb573 100644
--- a/packages/frontend/src/pages/about.emojis.vue
+++ b/packages/frontend/src/pages/about.emojis.vue
@@ -26,7 +26,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 		</div>
 	</MkFoldableSection>
 
-	<MkFoldableSection v-for="category in customEmojiCategories" v-once :key="category">
+	<MkFoldableSection v-for="category in customEmojiCategories" v-once :key="category ?? '___root___'">
 		<template #header>{{ category || i18n.ts.other }}</template>
 		<div :class="$style.emojis">
 			<XEmoji v-for="emoji in customEmojis.filter(e => e.category === category)" :key="emoji.name" :emoji="emoji"/>
diff --git a/packages/frontend/src/pages/about.overview.vue b/packages/frontend/src/pages/about.overview.vue
index 0b9eee7d49..4786615173 100644
--- a/packages/frontend/src/pages/about.overview.vue
+++ b/packages/frontend/src/pages/about.overview.vue
@@ -7,7 +7,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 <div class="_gaps_m">
 	<div :class="$style.banner" :style="{ backgroundImage: `url(${ instance.bannerUrl })` }">
 		<div style="overflow: clip;">
-			<img :src="instance.iconUrl ?? instance.faviconUrl ?? '/favicon.ico'" alt="" :class="$style.bannerIcon"/>
+			<img :src="instance.iconUrl ?? '/favicon.ico'" alt="" :class="$style.bannerIcon"/>
 			<div :class="$style.bannerName">
 				<b>{{ instance.name ?? host }}</b>
 			</div>
diff --git a/packages/frontend/src/pages/admin-file.vue b/packages/frontend/src/pages/admin-file.vue
index 90b3ca81cf..052829ffe2 100644
--- a/packages/frontend/src/pages/admin-file.vue
+++ b/packages/frontend/src/pages/admin-file.vue
@@ -172,7 +172,7 @@ const headerTabs = computed(() => [{
 	key: 'raw',
 	title: 'Raw data',
 	icon: 'ti ti-code',
-}]);
+}].filter(x => x != null));
 
 definePage(() => ({
 	title: file.value ? `${i18n.ts.file}: ${file.value.name}` : i18n.ts.file,
diff --git a/packages/frontend/src/ui/_common_/navbar-h.vue b/packages/frontend/src/ui/_common_/navbar-h.vue
index 688e195ce6..4f91078893 100644
--- a/packages/frontend/src/ui/_common_/navbar-h.vue
+++ b/packages/frontend/src/ui/_common_/navbar-h.vue
@@ -8,7 +8,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 	<div class="body">
 		<div class="left">
 			<button v-click-anime class="item _button instance" @click="openInstanceMenu">
-				<img :src="instance.iconUrl ?? instance.faviconUrl ?? '/favicon.ico'" draggable="false"/>
+				<img :src="instance.iconUrl ?? '/favicon.ico'" draggable="false"/>
 			</button>
 			<MkA v-click-anime v-tooltip="i18n.ts.timeline" class="item index" activeClass="active" to="/" exact>
 				<i class="ti ti-home ti-fw"></i>
@@ -21,7 +21,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 				</component>
 			</template>
 			<div class="divider"></div>
-			<MkA v-if="$i.isAdmin || $i.isModerator" v-click-anime v-tooltip="i18n.ts.controlPanel" class="item" activeClass="active" to="/admin" :behavior="settingsWindowed ? 'window' : null">
+			<MkA v-if="$i && ($i.isAdmin || $i.isModerator)" v-click-anime v-tooltip="i18n.ts.controlPanel" class="item" activeClass="active" to="/admin" :behavior="settingsWindowed ? 'window' : null">
 				<i class="ti ti-dashboard ti-fw"></i>
 			</MkA>
 			<button v-click-anime class="item _button" @click="more">
@@ -33,7 +33,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 			<MkA v-click-anime v-tooltip="i18n.ts.settings" class="item" activeClass="active" to="/settings" :behavior="settingsWindowed ? 'window' : null">
 				<i class="ti ti-settings ti-fw"></i>
 			</MkA>
-			<button v-click-anime class="item _button account" @click="openAccountMenu">
+			<button v-if="$i" v-click-anime class="item _button account" @click="openAccountMenu">
 				<MkAvatar :user="$i" class="avatar"/><MkAcct class="acct" :user="$i"/>
 			</button>
 			<div class="post" @click="os.post()">