diff --git a/Foxnouns.Frontend/src/lib/components/Error.svelte b/Foxnouns.Frontend/src/lib/components/Error.svelte
index c9e2c0e..7817dfa 100644
--- a/Foxnouns.Frontend/src/lib/components/Error.svelte
+++ b/Foxnouns.Frontend/src/lib/components/Error.svelte
@@ -12,8 +12,6 @@
 	<svelte:element this={headerElem ?? "h4"}>
 		{#if error.code === ErrorCode.BadRequest}
 			{$t("error.bad-request-header")}
-		{:else if error.status === 404}
-			{$t("error.not-found-header")}
 		{:else}
 			{$t("error.generic-header")}
 		{/if}
diff --git a/Foxnouns.Frontend/src/lib/components/editor/CustomPreferencesNotice.svelte b/Foxnouns.Frontend/src/lib/components/editor/CustomPreferencesNotice.svelte
deleted file mode 100644
index 319c1da..0000000
--- a/Foxnouns.Frontend/src/lib/components/editor/CustomPreferencesNotice.svelte
+++ /dev/null
@@ -1,8 +0,0 @@
-<script lang="ts">
-	import { t } from "$lib/i18n";
-</script>
-
-<div class="alert alert-secondary">
-	{$t("editor.custom-preference-notice")}
-	<a href="/settings/pref" class="alert-link">{$t("editor.custom-preference-notice-link")}</a>
-</div>
diff --git a/Foxnouns.Frontend/src/lib/components/editor/LinksEditor.svelte b/Foxnouns.Frontend/src/lib/components/editor/LinksEditor.svelte
index 4047880..f908e0e 100644
--- a/Foxnouns.Frontend/src/lib/components/editor/LinksEditor.svelte
+++ b/Foxnouns.Frontend/src/lib/components/editor/LinksEditor.svelte
@@ -2,16 +2,14 @@
 	import type { RawApiError } from "$api/error";
 	import IconButton from "$components/IconButton.svelte";
 	import { t } from "$lib/i18n";
-	import ephemeralState from "$lib/state.svelte";
 	import FormStatusMarker from "./FormStatusMarker.svelte";
 
 	type Props = {
-		stateKey: string;
 		currentLinks: string[];
 		save(links: string[]): Promise<void>;
 		form: { ok: boolean; error: RawApiError | null } | null;
 	};
-	let { stateKey, currentLinks, save, form }: Props = $props();
+	let { currentLinks, save, form }: Props = $props();
 
 	let links = $state(currentLinks);
 	let newEntry = $state("");
@@ -39,12 +37,6 @@
 		links = [...links, newEntry];
 		newEntry = "";
 	};
-
-	ephemeralState(
-		stateKey,
-		() => links,
-		(data) => (links = data),
-	);
 </script>
 
 <h4>
diff --git a/Foxnouns.Frontend/src/lib/components/editor/ProfileFlagsEditor.svelte b/Foxnouns.Frontend/src/lib/components/editor/ProfileFlagsEditor.svelte
index 304ae88..5bd62fd 100644
--- a/Foxnouns.Frontend/src/lib/components/editor/ProfileFlagsEditor.svelte
+++ b/Foxnouns.Frontend/src/lib/components/editor/ProfileFlagsEditor.svelte
@@ -4,18 +4,16 @@
 	import FlagSearch from "$components/editor/FlagSearch.svelte";
 	import IconButton from "$components/IconButton.svelte";
 	import { t } from "$lib/i18n";
-	import ephemeralState from "$lib/state.svelte";
 	import FlagButton from "./FlagButton.svelte";
 	import FormStatusMarker from "./FormStatusMarker.svelte";
 
 	type Props = {
-		stateKey: string;
 		profileFlags: PrideFlag[];
 		allFlags: PrideFlag[];
 		save(flags: string[]): Promise<void>;
 		form: { ok: boolean; error: RawApiError | null } | null;
 	};
-	let { stateKey, profileFlags, allFlags, save, form }: Props = $props();
+	let { profileFlags, allFlags, save, form }: Props = $props();
 
 	let flags = $state(profileFlags);
 
@@ -42,12 +40,6 @@
 	};
 
 	const saveChanges = () => save(flags.map((f) => f.id));
-
-	ephemeralState(
-		stateKey,
-		() => flags,
-		(data) => (flags = data),
-	);
 </script>
 
 <div class="row">
diff --git a/Foxnouns.Frontend/src/lib/i18n/locales/en.json b/Foxnouns.Frontend/src/lib/i18n/locales/en.json
index 1c15a83..0c2f958 100644
--- a/Foxnouns.Frontend/src/lib/i18n/locales/en.json
+++ b/Foxnouns.Frontend/src/lib/i18n/locales/en.json
@@ -121,8 +121,7 @@
 		"500-description": "Something went wrong on the server. Please try again later.",
 		"unknown-status-description": "Something went wrong, but we're not sure what. Please try again.",
 		"error-id": "If you report this error to the developers, please give them this ID:",
-		"page-not-found": "No page exists at this URL.",
-		"not-found-header": "That page could not be found"
+		"page-not-found": "No page exists at this URL."
 	},
 	"settings": {
 		"general-information-tab": "General information",
@@ -289,9 +288,7 @@
 		"custom-preference-size-small": "Small",
 		"custom-preference-size": "Text size",
 		"custom-preference-muted": "Show as muted text",
-		"custom-preference-favourite": "Treat like favourite",
-		"custom-preference-notice": "Want to edit your custom preferences?",
-		"custom-preference-notice-link": "Go to settings"
+		"custom-preference-favourite": "Treat like favourite"
 	},
 	"cancel": "Cancel",
 	"report": {
diff --git a/Foxnouns.Frontend/src/lib/state.svelte.ts b/Foxnouns.Frontend/src/lib/state.svelte.ts
deleted file mode 100644
index 8358bf3..0000000
--- a/Foxnouns.Frontend/src/lib/state.svelte.ts
+++ /dev/null
@@ -1,37 +0,0 @@
-import { onMount, onDestroy } from "svelte";
-import { browser } from "$app/environment";
-import log from "./log";
-// eslint-disable-next-line @typescript-eslint/no-unused-vars
-import type { Snapshot } from "@sveltejs/kit";
-
-/**
- * Store ephemeral state in sessionStorage to persist between navigations.
- * Similar to {@link Snapshot}, but doesn't attach it to a history entry.
- * @param key Unique key to use for this state.
- * @param capture Function that returns the state to store.
- * @param restore Function that takes the state that was stored previously and assigns it back to component variables.
- */
-export default function ephemeralState<T>(
-	key: string,
-	capture: () => T,
-	restore: (data: T) => void,
-): void {
-	if (!browser) return;
-
-	onMount(() => {
-		if (!("sessionStorage" in window)) return;
-		const rawData = sessionStorage.getItem("ephemeral-" + key);
-		if (!rawData) return;
-
-		log.debug("Restoring data %s from session storage", key);
-		const data = JSON.parse(rawData) as T;
-		restore(data);
-	});
-
-	onDestroy(() => {
-		if (!("sessionStorage" in window)) return;
-
-		log.debug("Saving data %s to session storage", key);
-		sessionStorage.setItem("ephemeral-" + key, JSON.stringify(capture()));
-	});
-}
diff --git a/Foxnouns.Frontend/src/routes/settings/members/[id]/+page.svelte b/Foxnouns.Frontend/src/routes/settings/members/[id]/+page.svelte
index 0e34638..64be86e 100644
--- a/Foxnouns.Frontend/src/routes/settings/members/[id]/+page.svelte
+++ b/Foxnouns.Frontend/src/routes/settings/members/[id]/+page.svelte
@@ -15,7 +15,6 @@
 	import BioEditor from "$components/editor/BioEditor.svelte";
 	import { PUBLIC_BASE_URL } from "$env/static/public";
 	import { enhance } from "$app/forms";
-	import ephemeralState from "$lib/state.svelte";
 
 	type Props = { data: PageData; form: ActionData };
 	let { data, form }: Props = $props();
@@ -62,12 +61,6 @@
 
 	// Bio is stored in a $state() so we have a markdown preview
 	let bio = $state(data.member.bio || "");
-
-	ephemeralState(
-		"member-" + data.member.id + "-bio",
-		() => bio,
-		(data) => (bio = data),
-	);
 </script>
 
 {#if error}
diff --git a/Foxnouns.Frontend/src/routes/settings/members/[id]/fields/+page.svelte b/Foxnouns.Frontend/src/routes/settings/members/[id]/fields/+page.svelte
index 7e86851..491a45f 100644
--- a/Foxnouns.Frontend/src/routes/settings/members/[id]/fields/+page.svelte
+++ b/Foxnouns.Frontend/src/routes/settings/members/[id]/fields/+page.svelte
@@ -2,11 +2,8 @@
 	import { apiRequest } from "$api";
 	import ApiError, { type RawApiError } from "$api/error";
 	import { mergePreferences, type User } from "$api/models/user";
-	import CustomPreferencesNotice from "$components/editor/CustomPreferencesNotice.svelte";
 	import FieldsEditor from "$components/editor/FieldsEditor.svelte";
-	import NoscriptWarning from "$components/editor/NoscriptWarning.svelte";
 	import log from "$lib/log";
-	import ephemeralState from "$lib/state.svelte";
 	import type { PageData } from "./$types";
 
 	type Props = { data: PageData };
@@ -30,15 +27,6 @@
 			if (e instanceof ApiError) ok.error = e.obj;
 		}
 	};
-
-	ephemeralState(
-		"member-" + data.member.id + "-fields",
-		() => fields,
-		(data) => (fields = data),
-	);
 </script>
 
-<NoscriptWarning />
-<CustomPreferencesNotice />
-
 <FieldsEditor bind:fields {ok} {allPreferences} {update} />
diff --git a/Foxnouns.Frontend/src/routes/settings/members/[id]/flags-links/+page.svelte b/Foxnouns.Frontend/src/routes/settings/members/[id]/flags-links/+page.svelte
index e9e1c2d..b6aaadb 100644
--- a/Foxnouns.Frontend/src/routes/settings/members/[id]/flags-links/+page.svelte
+++ b/Foxnouns.Frontend/src/routes/settings/members/[id]/flags-links/+page.svelte
@@ -41,16 +41,10 @@
 </script>
 
 <ProfileFlagsEditor
-	stateKey="member-{data.member.id}-flags"
 	profileFlags={data.member.flags}
 	allFlags={data.flags}
 	save={flagSave}
 	form={flagForm}
 />
 
-<LinksEditor
-	stateKey="member-{data.member.id}-links"
-	currentLinks={data.member.links}
-	save={linksSave}
-	form={linksForm}
-/>
+<LinksEditor currentLinks={data.member.links} save={linksSave} form={linksForm} />
diff --git a/Foxnouns.Frontend/src/routes/settings/members/[id]/names-pronouns/+page.svelte b/Foxnouns.Frontend/src/routes/settings/members/[id]/names-pronouns/+page.svelte
index 9aa19bb..19ed7e5 100644
--- a/Foxnouns.Frontend/src/routes/settings/members/[id]/names-pronouns/+page.svelte
+++ b/Foxnouns.Frontend/src/routes/settings/members/[id]/names-pronouns/+page.svelte
@@ -3,14 +3,12 @@
 	import ApiError, { type RawApiError } from "$api/error";
 	import type { Member } from "$api/models";
 	import { mergePreferences } from "$api/models/user";
-	import CustomPreferencesNotice from "$components/editor/CustomPreferencesNotice.svelte";
 	import FieldEditor from "$components/editor/FieldEditor.svelte";
 	import FormStatusMarker from "$components/editor/FormStatusMarker.svelte";
 	import NoscriptWarning from "$components/editor/NoscriptWarning.svelte";
 	import PronounsEditor from "$components/editor/PronounsEditor.svelte";
 	import { t } from "$lib/i18n";
 	import log from "$lib/log";
-	import ephemeralState from "$lib/state.svelte";
 	import type { PageData } from "./$types";
 
 	type Props = { data: PageData };
@@ -23,15 +21,6 @@
 
 	let allPreferences = $derived(mergePreferences(data.user.custom_preferences));
 
-	ephemeralState(
-		"member-" + data.member.id + "-names-pronouns",
-		() => ({ names, pronouns }),
-		(data) => {
-			names = data.names;
-			pronouns = data.pronouns;
-		},
-	);
-
 	const update = async () => {
 		try {
 			const resp = await apiRequest<Member>("PATCH", `/users/@me/members/${data.member.id}`, {
@@ -51,7 +40,6 @@
 
 <NoscriptWarning />
 <FormStatusMarker form={ok} />
-<CustomPreferencesNotice />
 
 <div>
 	<FieldEditor name={$t("profile.names-header")} bind:entries={names} {allPreferences} />
diff --git a/Foxnouns.Frontend/src/routes/settings/profile/bio/+page.svelte b/Foxnouns.Frontend/src/routes/settings/profile/bio/+page.svelte
index 91e452b..19e04fb 100644
--- a/Foxnouns.Frontend/src/routes/settings/profile/bio/+page.svelte
+++ b/Foxnouns.Frontend/src/routes/settings/profile/bio/+page.svelte
@@ -3,18 +3,11 @@
 	import type { ActionData, PageData } from "./$types";
 	import BioEditor from "$components/editor/BioEditor.svelte";
 	import { t } from "$lib/i18n";
-	import ephemeralState from "$lib/state.svelte";
 
 	type Props = { data: PageData; form: ActionData };
 	let { data, form }: Props = $props();
 
 	let bio = $state(data.user.bio || "");
-
-	ephemeralState(
-		"user-bio",
-		() => bio,
-		(data) => (bio = data),
-	);
 </script>
 
 <h4>{$t("edit-profile.bio-tab")}</h4>
diff --git a/Foxnouns.Frontend/src/routes/settings/profile/fields/+page.svelte b/Foxnouns.Frontend/src/routes/settings/profile/fields/+page.svelte
index 3f47f74..4c61a58 100644
--- a/Foxnouns.Frontend/src/routes/settings/profile/fields/+page.svelte
+++ b/Foxnouns.Frontend/src/routes/settings/profile/fields/+page.svelte
@@ -2,11 +2,8 @@
 	import { apiRequest } from "$api";
 	import ApiError, { type RawApiError } from "$api/error";
 	import { mergePreferences, type User } from "$api/models/user";
-	import CustomPreferencesNotice from "$components/editor/CustomPreferencesNotice.svelte";
 	import FieldsEditor from "$components/editor/FieldsEditor.svelte";
-	import NoscriptWarning from "$components/editor/NoscriptWarning.svelte";
 	import log from "$lib/log";
-	import ephemeralState from "$lib/state.svelte";
 	import type { PageData } from "./$types";
 
 	type Props = { data: PageData };
@@ -30,15 +27,6 @@
 			if (e instanceof ApiError) ok.error = e.obj;
 		}
 	};
-
-	ephemeralState(
-		"user-fields",
-		() => fields,
-		(data) => (fields = data),
-	);
 </script>
 
-<NoscriptWarning />
-<CustomPreferencesNotice />
-
 <FieldsEditor bind:fields {ok} {allPreferences} {update} />
diff --git a/Foxnouns.Frontend/src/routes/settings/profile/flags-links/+page.svelte b/Foxnouns.Frontend/src/routes/settings/profile/flags-links/+page.svelte
index b56d0c2..4b2b165 100644
--- a/Foxnouns.Frontend/src/routes/settings/profile/flags-links/+page.svelte
+++ b/Foxnouns.Frontend/src/routes/settings/profile/flags-links/+page.svelte
@@ -41,16 +41,10 @@
 </script>
 
 <ProfileFlagsEditor
-	stateKey="user-flags"
 	profileFlags={data.user.flags}
 	allFlags={data.flags}
 	save={flagSave}
 	form={flagForm}
 />
 
-<LinksEditor
-	stateKey="user-links"
-	currentLinks={data.user.links}
-	save={linksSave}
-	form={linksForm}
-/>
+<LinksEditor currentLinks={data.user.links} save={linksSave} form={linksForm} />
diff --git a/Foxnouns.Frontend/src/routes/settings/profile/names-pronouns/+page.svelte b/Foxnouns.Frontend/src/routes/settings/profile/names-pronouns/+page.svelte
index 2703748..e22c5d5 100644
--- a/Foxnouns.Frontend/src/routes/settings/profile/names-pronouns/+page.svelte
+++ b/Foxnouns.Frontend/src/routes/settings/profile/names-pronouns/+page.svelte
@@ -2,14 +2,12 @@
 	import { apiRequest } from "$api";
 	import ApiError, { type RawApiError } from "$api/error";
 	import { mergePreferences, type User } from "$api/models/user";
-	import CustomPreferencesNotice from "$components/editor/CustomPreferencesNotice.svelte";
 	import FieldEditor from "$components/editor/FieldEditor.svelte";
 	import FormStatusMarker from "$components/editor/FormStatusMarker.svelte";
 	import NoscriptWarning from "$components/editor/NoscriptWarning.svelte";
 	import PronounsEditor from "$components/editor/PronounsEditor.svelte";
 	import { t } from "$lib/i18n";
 	import log from "$lib/log";
-	import ephemeralState from "$lib/state.svelte";
 	import type { PageData } from "./$types";
 
 	type Props = { data: PageData };
@@ -20,15 +18,6 @@
 	let ok: { ok: boolean; error: RawApiError | null } | null = $state(null);
 	let allPreferences = $derived(mergePreferences(data.user.custom_preferences));
 
-	ephemeralState(
-		"user-names-pronouns",
-		() => ({ names, pronouns }),
-		(data) => {
-			names = data.names;
-			pronouns = data.pronouns;
-		},
-	);
-
 	const update = async () => {
 		try {
 			const resp = await apiRequest<User>("PATCH", "/users/@me", {
@@ -48,7 +37,6 @@
 
 <NoscriptWarning />
 <FormStatusMarker form={ok} />
-<CustomPreferencesNotice />
 
 <div>
 	<FieldEditor name={$t("profile.names-header")} bind:entries={names} {allPreferences} />