diff --git a/services/web/app/views/layout/language-picker.pug b/services/web/app/views/layout/language-picker.pug
index 217fb02a9f..50486ef0bc 100644
--- a/services/web/app/views/layout/language-picker.pug
+++ b/services/web/app/views/layout/language-picker.pug
@@ -17,6 +17,7 @@ li.language-picker
 					li(role='none')
 						a.dropdown-item(
 							role='menuitem'
+							href='/set-language?lng=' + encodeURIComponent(lngCode) + '&return_to=/'
 							data-lng=lngCode
 							class=lngCode === currentLngCode ? 'active' : ''
 						)= settings.translatedLanguages[lngCode]
diff --git a/services/web/frontend/js/shared/context/layout-context.tsx b/services/web/frontend/js/shared/context/layout-context.tsx
index 32eae290ab..7441e158ad 100644
--- a/services/web/frontend/js/shared/context/layout-context.tsx
+++ b/services/web/frontend/js/shared/context/layout-context.tsx
@@ -85,6 +85,17 @@ function setLayoutInLocalStorage(pdfLayout: IdeLayout) {
   )
 }
 
+const MOBILE_MQ = '(max-width: 767px)'
+
+function getInitialLayout(): IdeLayout {
+  const stored = localStorage.getItem('pdf.layout')
+  if (stored === 'vertical') return 'verticalSplit'
+  if (stored === 'flat') return 'flat'
+  if (stored === 'split') return 'sideBySide'
+  // No stored preference — default to vertical split on mobile
+  return window.matchMedia(MOBILE_MQ).matches ? 'verticalSplit' : 'sideBySide'
+}
+
 const reviewPanelStorageKey = `ui.reviewPanelOpen.${getMeta('ol-project_id')}`
 
 export const LayoutProvider: FC<React.PropsWithChildren> = ({ children }) => {
@@ -196,7 +207,7 @@ export const LayoutProvider: FC<React.PropsWithChildren> = ({ children }) => {
   )
 
   // whether to display the editor and preview side-by-side or full-width ("flat")
-  const [pdfLayout, setPdfLayout] = useState<IdeLayout>('sideBySide')
+  const [pdfLayout, setPdfLayout] = useState<IdeLayout>(getInitialLayout)
 
   // whether stylesheet on theme is loading
   const [loadingStyleSheet, setLoadingStyleSheet] = useState(false)
diff --git a/services/web/frontend/stylesheets/components/footer.scss b/services/web/frontend/stylesheets/components/footer.scss
index 8a61d8748a..126f143bb0 100644
--- a/services/web/frontend/stylesheets/components/footer.scss
+++ b/services/web/frontend/stylesheets/components/footer.scss
@@ -246,9 +246,12 @@ footer.site-footer {
 }
 
 .language-picker .dropdown-menu {
-  // Open upward — Popper.js isn't available on all page layouts
+  // Open upward, anchored to the right edge so it doesn't overflow off-screen
+  // when the picker is near the right side of the footer
   top: auto;
   bottom: 100%;
+  left: auto;
+  right: 0;
   margin-bottom: var(--spacing-02);
 
   .dropdown-item {
diff --git a/services/web/locales/__pycache__/fix_translations.cpython-311.pyc b/services/web/locales/__pycache__/fix_translations.cpython-311.pyc
new file mode 100644
index 0000000000..997420a4d3
Binary files /dev/null and b/services/web/locales/__pycache__/fix_translations.cpython-311.pyc differ
diff --git a/services/web/locales/cs.json b/services/web/locales/cs.json
index a5b77213d9..c801e21b49 100644
--- a/services/web/locales/cs.json
+++ b/services/web/locales/cs.json
@@ -337,5 +337,6 @@
   "your_plan": "Váš tarif",
   "your_projects": "Vaše projekty",
   "your_subscription_has_expired": "Vaše předplatné vypršelo.",
+  "top_bottom_split_view": "Horní/dolní rozdělené zobrazení",
   "your_subscriptions": "Vaše předplatná"
 }
diff --git a/services/web/locales/da.json b/services/web/locales/da.json
index 591e726a7b..b047ed6110 100644
--- a/services/web/locales/da.json
+++ b/services/web/locales/da.json
@@ -2165,5 +2165,6 @@
   "zotero_reference_loading_error": "Fejl, kunne ikke indlæse referencer fra Zotero",
   "zotero_reference_loading_error_expired": "Zotero nøgle udløbet, genforbind venligst din konto",
   "zotero_reference_loading_error_forbidden": "Kunne ikke indlæse referencer fra Zotero, genforbind venligst din konto og prøv igen",
+  "top_bottom_split_view": "Øverste/nedre delt visning",
   "zotero_sync_description": "Via Zotero-integrationen kan du importere dine referencer fra Zotero ind i dine __appName__-projekter."
 }
diff --git a/services/web/locales/de.json b/services/web/locales/de.json
index 2e760c2cf8..e048197014 100644
--- a/services/web/locales/de.json
+++ b/services/web/locales/de.json
@@ -2506,6 +2506,7 @@
   "spellcheck_language": "Sprache der Rechtschreibprüfung",
   "spelling_and_language": "Rechtschreibung und Sprache",
   "split_view": "Geteilte Ansicht",
+  "top_bottom_split_view": "Oben/unten teilen",
   "sso": "SSO",
   "sso_account_already_linked": "Das Konto ist bereits mit einem anderen __appName__-Nutzer verknüpft",
   "sso_active": "SSO aktiv",
diff --git a/services/web/locales/es.json b/services/web/locales/es.json
index c6c50f9295..941a217cdb 100644
--- a/services/web/locales/es.json
+++ b/services/web/locales/es.json
@@ -2486,6 +2486,7 @@
   "spellcheck_language": "Idioma del corrector ortográfico",
   "spelling_and_language": "Ortografía y lenguaje",
   "split_view": "Vista dividida",
+  "top_bottom_split_view": "Vista dividida arriba/abajo",
   "sso": "SSO",
   "sso_account_already_linked": "Cuenta ya vinculada a otro usuario __appName__",
   "sso_active": "SSO activo",
diff --git a/services/web/locales/fi.json b/services/web/locales/fi.json
index 8a5b7cf9da..f188bf55d7 100644
--- a/services/web/locales/fi.json
+++ b/services/web/locales/fi.json
@@ -343,5 +343,6 @@
   "your_projects": "Sinun projektisi",
   "your_subscription_has_expired": "Tilauksesi on umpeutunut.",
   "your_subscriptions": "Tilauksesi tilaukset",
+  "top_bottom_split_view": "Ylä/alakerros jaettu näkymä",
   "zh-CN": "Kiina"
 }
diff --git a/services/web/locales/it.json b/services/web/locales/it.json
index 3d07391b2a..7ea3907d4e 100644
--- a/services/web/locales/it.json
+++ b/services/web/locales/it.json
@@ -2485,6 +2485,7 @@
   "spellcheck_language": "Lingua del controllo ortografico",
   "spelling_and_language": "Ortografia e lingua",
   "split_view": "Visualizzazione divisa",
+  "top_bottom_split_view": "Vista divisa in alto/basso",
   "sso": "SSO",
   "sso_account_already_linked": "Account già collegato a un altro utente __appName__",
   "sso_active": "SSO attivo",
diff --git a/services/web/locales/ja.json b/services/web/locales/ja.json
index 9f833c15be..8098507948 100644
--- a/services/web/locales/ja.json
+++ b/services/web/locales/ja.json
@@ -487,5 +487,6 @@
   "zotero_reference_loading_error": "エラー。Zoteroからリファレンスを読み込むことができませんでした",
   "zotero_reference_loading_error_expired": "Zoteroトークンの期限が切れました。アカウントを再リンクしてください",
   "zotero_reference_loading_error_forbidden": "Zoteroのリファレンスを読み込むことができませんでした。アカウントを再リンクして、再度お試しください",
+  "top_bottom_split_view": "上下分割ビュー",
   "zotero_sync_description": "Zoteroを統合すると、Zoteroから__appName__プロジェクトにリファレンスをインポートすることができます。"
 }
diff --git a/services/web/locales/ko.json b/services/web/locales/ko.json
index f1fa363ed6..078b51c80b 100644
--- a/services/web/locales/ko.json
+++ b/services/web/locales/ko.json
@@ -548,5 +548,6 @@
   "your_sessions": "나의 세션",
   "your_subscription_has_expired": "구독이 만료되었습니다.",
   "your_subscriptions": "나의 구독 목록",
+  "top_bottom_split_view": "상하 분할 보기",
   "zh-CN": "中國語"
 }
diff --git a/services/web/locales/nl.json b/services/web/locales/nl.json
index 8242939708..313b95ecba 100644
--- a/services/web/locales/nl.json
+++ b/services/web/locales/nl.json
@@ -558,5 +558,6 @@
   "zotero_is_premium": "Zotero Integratie is een premium functie",
   "zotero_reference_loading_error": "Error, kan referenties niet laden vanaf Mendeley",
   "zotero_reference_loading_error_expired": "Zotero token verlopen, gelieve je account opnieuw te koppelen",
+  "top_bottom_split_view": "Boven/onder gesplitst",
   "zotero_reference_loading_error_forbidden": "Kon referenties niet laden vanaf Zotero, gelieve je account opnieuw te koppelen en nogmaals te proberen"
 }
diff --git a/services/web/locales/no.json b/services/web/locales/no.json
index e5c2148f32..1283857f5d 100644
--- a/services/web/locales/no.json
+++ b/services/web/locales/no.json
@@ -389,5 +389,6 @@
   "your_projects": "Dine prosjekter",
   "your_subscription_has_expired": "Dit abonnement har utgått.",
   "your_subscriptions": "Dine abonnementer",
+  "top_bottom_split_view": "Øvre/nedre delt visning",
   "zh-CN": "Kinesisk"
 }
diff --git a/services/web/locales/pl.json b/services/web/locales/pl.json
index f15de3aa75..9a10f49bad 100644
--- a/services/web/locales/pl.json
+++ b/services/web/locales/pl.json
@@ -228,5 +228,6 @@
   "year": "rok",
   "your_plan": "Twój plan",
   "your_projects": "Twoje projekty",
+  "top_bottom_split_view": "Widok podzielony góra/dół",
   "your_subscriptions": "Twoje subskrypcje"
 }
diff --git a/services/web/locales/pt.json b/services/web/locales/pt.json
index 5402506228..2daf435949 100644
--- a/services/web/locales/pt.json
+++ b/services/web/locales/pt.json
@@ -658,5 +658,6 @@
   "zotero_reference_loading_error": "Erro, não foi possível carregar as referências do Zotero",
   "zotero_reference_loading_error_expired": "O token do Zotero expirou, por favor, revincule sua conta",
   "zotero_reference_loading_error_forbidden": "Não foi possível carregar as referências do Zotero, por favor, revincule sua conta e tente novamente",
+  "top_bottom_split_view": "Divisão superior/inferior",
   "zotero_sync_description": "A integração Zotero permite você importar as referências do zotero para seus projetos no __appName__."
 }
diff --git a/services/web/locales/ru.json b/services/web/locales/ru.json
index 7ce5b15e70..88247e1425 100644
--- a/services/web/locales/ru.json
+++ b/services/web/locales/ru.json
@@ -463,5 +463,6 @@
   "your_sessions": "Ваши сессии",
   "your_subscription_has_expired": "Срок Вашей подписки истёк.",
   "your_subscriptions": "Ваши подписки",
+  "top_bottom_split_view": "Разделить сверху/снизу",
   "zh-CN": "Китайский"
 }
diff --git a/services/web/locales/sv.json b/services/web/locales/sv.json
index a4f25cc1cc..d2cd26c60e 100644
--- a/services/web/locales/sv.json
+++ b/services/web/locales/sv.json
@@ -935,5 +935,6 @@
   "zotero_reference_loading_error": "Fel, kunde inte ladda referenser från Zotero",
   "zotero_reference_loading_error_expired": "Zotero token har utgått, vänligen återkoppla ditt konto",
   "zotero_reference_loading_error_forbidden": "Kunde inte ladda referenser från Zotero, vänligen återkoppla ditt konto och försök igen",
+  "top_bottom_split_view": "Övre/nedre delad vy",
   "zotero_sync_description": "Med Zotero integrering kan du importera dina referenser direkt från Zotero till ditt __appName__ projekt."
 }
diff --git a/services/web/locales/tr.json b/services/web/locales/tr.json
index 62582ffce2..1076acf8a5 100644
--- a/services/web/locales/tr.json
+++ b/services/web/locales/tr.json
@@ -375,5 +375,6 @@
   "your_projects": "Sizin Projeleriniz",
   "your_subscription_has_expired": "Aboneliğinizin süresi doldu.",
   "your_subscriptions": "Abonelikleriniz",
+  "top_bottom_split_view": "Yukarı/aşağı bölünmüş görünüm",
   "zh-CN": "Çince"
 }
diff --git a/services/web/locales/zh-CN.json b/services/web/locales/zh-CN.json
index 8441c9726b..1048c6b863 100644
--- a/services/web/locales/zh-CN.json
+++ b/services/web/locales/zh-CN.json
@@ -1911,6 +1911,7 @@
   "spellcheck": "拼写检查",
   "spellcheck_language": "拼写检查语言",
   "split_view": "拆分视图",
+  "top_bottom_split_view": "上下分割视图",
   "sso": "单点登录(SSO)",
   "sso_account_already_linked": "帐户已链接到另一个__appName__用户",
   "sso_active": "SSO 激活",