diff --git a/crates/ui-egui/src/i18n/ui.rs b/crates/ui-egui/src/i18n/ui.rs
index 023dad48e..cf90170cf 100644
--- a/crates/ui-egui/src/i18n/ui.rs
+++ b/crates/ui-egui/src/i18n/ui.rs
@@ -221,6 +221,10 @@ const JAPANESE: &[(&str, &str)] = &[
     ("Drag to slip the source", "ドラッグしてソースをスリップ"),
     ("Drop Frame", "ドロップフレーム"),
     ("Duplicate", "複製"),
+    ("Copy", "コピー"),
+    ("Paste", "ペースト"),
+    ("Edit Value…", "値を編集…"),
+    ("Remove Expression", "エクスプレッションを削除"),
     ("Duration:", "デュレーション:"),
     ("Edit Gradient…", "グラデーションを編集…"),
     ("Edit Target: {}", "編集対象：{}"),
@@ -766,6 +770,10 @@ const SIMPLIFIED_CHINESE: &[(&str, &str)] = &[
     ("Drag to slip the source", "拖动可滑移源"),
     ("Drop Frame", "丢帧"),
     ("Duplicate", "重复"),
+    ("Copy", "复制"),
+    ("Paste", "粘贴"),
+    ("Edit Value…", "编辑值…"),
+    ("Remove Expression", "移除表达式"),
     ("Duration:", "持续时间："),
     ("Edit Gradient…", "编辑渐变…"),
     ("Edit Target: {}", "编辑目标：{}"),
@@ -1499,6 +1507,10 @@ const TRADITIONAL_CHINESE: &[(&str, &str)] = &[
     ("Drag to slip the source", "拖曳可滑移源"),
     ("Drop Frame", "丟格"),
     ("Duplicate", "重複"),
+    ("Copy", "拷貝"),
+    ("Paste", "貼上"),
+    ("Edit Value…", "編輯值…"),
+    ("Remove Expression", "移除運算式"),
     ("Duration:", "持續時間："),
     ("Edit Gradient…", "編輯漸變…"),
     ("Edit Target: {}", "編輯目標：{}"),
@@ -2235,6 +2247,10 @@ const UKRAINIAN: &[(&str, &str)] = &[
     ("Drag to slip the source", "Перетягніть, щоб зсунути матеріал у межах шару"),
     ("Drop Frame", "Пропуск номерів"),
     ("Duplicate", "Дублювати"),
+    ("Copy", "Копіювати"),
+    ("Paste", "Вставити"),
+    ("Edit Value…", "Редагувати значення…"),
+    ("Remove Expression", "Вилучити вираз"),
     ("Duration:", "Тривалість:"),
     ("Edit Gradient…", "Редагувати градієнт…"),
     ("Edit Target: {}", "Ціль редагування: {}"),
@@ -2788,6 +2804,10 @@ const PORTUGUESE: &[(&str, &str)] = &[
     ("Drag to slip the source", "Arraste para deslizar a origem"),
     ("Drop Frame", "Drop frame"),
     ("Duplicate", "Duplicar"),
+    ("Copy", "Copiar"),
+    ("Paste", "Colar"),
+    ("Edit Value…", "Editar valor…"),
+    ("Remove Expression", "Remover expressão"),
     ("Duration:", "Duração:"),
     ("Edit Gradient…", "Editar gradiente…"),
     ("Edit Target: {}", "Editar destino: {}"),
@@ -3239,6 +3259,10 @@ const CZECH: &[(&str, &str)] = &[
     ("Drag to slip the source", "Tažením posunete zdroj v čase"),
     ("Drop Frame", "Vynechávat čísla snímků"),
     ("Duplicate", "Duplikovat"),
+    ("Copy", "Kopírovat"),
+    ("Paste", "Vložit"),
+    ("Edit Value…", "Upravit hodnotu…"),
+    ("Remove Expression", "Odstranit výraz"),
     ("Duration:", "Délka trvání:"),
     ("Edit Gradient…", "Upravit přechod…"),
     ("Edit Target: {}", "Upravit cíl: {}"),
@@ -3796,6 +3820,10 @@ const SPANISH: &[(&str, &str)] = &[
     ("Drag to slip the source", "Arrastra para deslizar el origen"),
     ("Drop Frame", "Drop frame"),
     ("Duplicate", "Duplicar"),
+    ("Copy", "Copiar"),
+    ("Paste", "Pegar"),
+    ("Edit Value…", "Editar valor…"),
+    ("Remove Expression", "Quitar expresión"),
     ("Duration:", "Duración:"),
     ("Edit Gradient…", "Editar degradado…"),
     ("Edit Target: {}", "Destino de la edición: {}"),
diff --git a/crates/ui-egui/src/panels/effect_controls.rs b/crates/ui-egui/src/panels/effect_controls.rs
index bad1db39f..05b58d61e 100644
--- a/crates/ui-egui/src/panels/effect_controls.rs
+++ b/crates/ui-egui/src/panels/effect_controls.rs
@@ -1279,7 +1279,7 @@ pub fn show(app: &mut EffectcraftApp, ui: &mut egui::Ui, rect: Rect) {
             let lid = layer.id.0;
             let mut picked_label: Option<usize> = None;
             let mut item = |ui: &mut egui::Ui, label: &str, enabled: bool, cmd: &str, params: serde_json::Value| {
-                if ui.add_enabled(enabled, egui::Button::new(label)).clicked() {
+                if ui.add_enabled(enabled, egui::Button::new(crate::i18n::context_item(cmd, &params, label))).clicked() {
                     actions.push((cmd.into(), params));
                     ui.close();
                 }
diff --git a/crates/ui-egui/src/panels/timeline.rs b/crates/ui-egui/src/panels/timeline.rs
index ce1c3e4d7..425d48c31 100644
--- a/crates/ui-egui/src/panels/timeline.rs
+++ b/crates/ui-egui/src/panels/timeline.rs
@@ -3796,7 +3796,7 @@ fn prop_menu(
 ) {
     let (l, uid) = (layer.id.0, prop.uid);
     let mut item = |ui: &mut egui::Ui, key: &str, label: &str, selected: bool, cmd: &str, params: serde_json::Value| {
-        let resp = ui.add(egui::Button::new(label).selected(selected));
+        let resp = ui.add(egui::Button::new(crate::i18n::context_item(cmd, &params, label)).selected(selected));
         auto.add(&format!("timeline.prop.{uid}.menu.{key}"), resp.rect, label);
         if resp.clicked() {
             actions.push((cmd.into(), params));
@@ -4573,6 +4573,39 @@ mod tests {
         assert!(actions.is_empty());
     }
 
+    /// The property context menu draws its items in the interface language too: the commands the
+    /// menu bar has from its rows, Reset, Edit Value… and Remove Expression from the panel catalog.
+    /// The automation labels stay English.
+    #[test]
+    fn the_property_context_menu_draws_in_the_interface_language() {
+        let mut s = effectcraft_engine::Session::default();
+        s.execute("comp.new", json!({"name": "Main", "width": 64, "height": 64, "duration": 4})).unwrap();
+        let l = s.execute("layer.newSolid", json!({"name": "Plate", "color": "#406080"})).unwrap()["layer"].as_u64().unwrap();
+        let opacity = s.active_comp().unwrap().layer(LayerId(l)).unwrap().props.prop("transform/opacity").unwrap().uid;
+        s.execute("prop.setExpression", json!({"layer": l, "prop": opacity})).unwrap();
+        let comp = s.active_comp_id().unwrap();
+        let layer = s.active_comp().unwrap().layer(LayerId(l)).unwrap().clone();
+        let (position, opacity) = (layer.props.prop("transform/position").unwrap(), layer.props.prop("transform/opacity").unwrap());
+        let (mut auto, mut actions) = (crate::automation::Registry::default(), Vec::new());
+        let mut menu = |language| {
+            crate::i18n::set_current(language);
+            let mut drawn = drawn_text(|ui| prop_menu(ui, &mut auto, comp, &layer, position, &mut actions));
+            drawn.extend(drawn_text(|ui| prop_menu(ui, &mut auto, comp, &layer, opacity, &mut actions)));
+            drawn
+        };
+        let chinese = menu("zh-hans");
+        let english = menu("en");
+        for label in ["重置", "编辑值…", "单独尺寸", "添加表达式", "移除表达式", "向基本图形添加属性"] {
+            assert!(chinese.iter().any(|t| t == label), "{label} missing from {chinese:?}");
+        }
+        assert!(!chinese.iter().any(|t| t.is_ascii()), "English left in {chinese:?}");
+        for label in ["Reset", "Edit Value…", "Separate Dimensions", "Remove Expression", "Add Property to Essential Graphics"] {
+            assert!(english.iter().any(|t| t == label), "{label} missing from {english:?}");
+        }
+        assert!(auto.elements.iter().any(|e| e.label == "Remove Expression"), "the automation label stays English");
+        assert!(actions.is_empty());
+    }
+
     /// UI fidelity (M13.5): compact After Effects-like rows and muted label-coloured bars.
     #[test]
     fn rows_and_bars_follow_after_effects_proportions() {
diff --git a/crates/ui-egui/tests/ui_effect_names.rs b/crates/ui-egui/tests/ui_effect_names.rs
index c65d2cea2..28d1a1f3f 100644
--- a/crates/ui-egui/tests/ui_effect_names.rs
+++ b/crates/ui-egui/tests/ui_effect_names.rs
@@ -85,6 +85,41 @@ fn the_generated_effect_menu_is_translated() {
     assert_eq!(menu_label(&en, "Effect", "Blur & Sharpen", BLUR).as_deref(), Some(BLUR_EN), "the English menu is unchanged");
 }
 
+/// Right-click the Effect Controls header of effect `fx`.
+fn open_effect_menu(h: &mut Harness<'_, EffectcraftApp>, fx: u64) {
+    let e = h.state().auto.find(&format!("effectControls.effect.{fx}")).expect("the effect's header").rect;
+    let pos = egui::pos2(e[0] + e[2] / 2.0, e[1] + e[3] / 2.0);
+    h.event(egui::Event::PointerMoved(pos));
+    h.step();
+    for pressed in [true, false] {
+        h.event(egui::Event::PointerButton { pos, button: egui::PointerButton::Secondary, pressed, modifiers: Default::default() });
+        h.step();
+    }
+    h.run_steps(2);
+}
+
+/// The effect header's context menu draws its items in the interface language, like the layer
+/// menu (#1308): it used to draw Copy, Paste, Duplicate, Reset, Remove, Move Up and Move Down in
+/// English whatever the language.
+#[test]
+fn the_effect_context_menu_follows_the_interface_language() {
+    const ENGLISH: [&str; 7] = ["Copy", "Paste", "Duplicate", "Reset", "Remove", "Move Up", "Move Down"];
+    let (mut h, fx) = harness("zh-hans");
+    open_effect_menu(&mut h, fx);
+    for label in ["复制", "粘贴", "重复", "重命名", "重置", "移除", "上移", "下移"] {
+        assert!(h.query_by_label(label).is_some(), "{label} missing from the effect menu");
+    }
+    for label in ENGLISH {
+        assert!(h.query_by_label(label).is_none(), "{label} drawn in English");
+    }
+
+    let (mut en, fx) = harness("en");
+    open_effect_menu(&mut en, fx);
+    for label in ENGLISH {
+        assert!(en.query_by_label(label).is_some(), "{label} missing from the English menu");
+    }
+}
+
 /// Everything an agent or a script addresses stays English: the automation label, the property
 /// tree's group name and `effect.list`.
 #[test]