diff --git a/crates/ui-egui/src/lib.rs b/crates/ui-egui/src/lib.rs
index 747a5e0..3750c0b 100644
--- a/crates/ui-egui/src/lib.rs
+++ b/crates/ui-egui/src/lib.rs
@@ -378,6 +378,13 @@ impl SheetApp {
         }
         let r = self.session.run(id, params);
         self.after_engine();
+        // The new chart is selected, as after inserting any object, so Delete removes it, not its data.
+        if id == "insert.chart"
+            && let Ok(r) = &r
+            && let Some(chart) = r.get("chart").and_then(Json::as_u64).and_then(|id| u32::try_from(id).ok())
+        {
+            self.selected_chart = Some(chart);
+        }
         if id == "file.exportPdf"
             && let Ok(r) = &r
         {
diff --git a/crates/ui-egui/tests/interaction.rs b/crates/ui-egui/tests/interaction.rs
index fc9ee52..f5d7d3e 100644
--- a/crates/ui-egui/tests/interaction.rs
+++ b/crates/ui-egui/tests/interaction.rs
@@ -224,6 +224,25 @@ fn delete_key_removes_the_selected_chart() {
     assert_eq!(value(&h, "A1"), Value::Number(1.0));
 }
 
+#[test]
+fn inserted_chart_is_selected_so_delete_removes_it() {
+    // #668, #256: after Insert › Chart the selection stayed on the source cells, so Delete
+    // cleared the data and left the chart behind.
+    let mut session = blank();
+    session.execute("range.setValues", json!({"range": "A1:B2", "values": [[1, 2], [3, 4]]})).unwrap();
+    session.execute("selection.set", json!({"range": "A1:B2"})).unwrap();
+    let mut h = harness(session);
+
+    let id = h.state_mut().run("insert.chart", json!({"type": "column"})).unwrap()["chart"].as_u64().unwrap() as u32;
+    h.run_steps(2);
+    assert_eq!(h.state().selected_chart, Some(id), "the new chart is selected");
+
+    key(&mut h, Key::Delete, Modifiers::NONE);
+
+    assert!(h.state().session.active().unwrap().wb.active().unwrap().charts.is_empty());
+    assert_eq!(value(&h, "A1"), Value::Number(1.0));
+}
+
 #[test]
 fn renders_every_ribbon_tab_without_panicking() {
     let mut s = Session::new();