Render initial chat prompt and submitted messages

uiterm/textbox.go

@@ -147,7 +147,13 @@ func (t *Textbox) uiKeyEvent(key Key) {
 		//		}
 	}
 	if redraw {
-		t.uiDraw()
+		// Input callbacks may update another view (for example, append a chat
+		// message). Redraw every view after submission, not just this textbox.
+		if key == KeyEnter && t.ui != nil {
+			t.ui.Refresh()
+		} else {
+			t.uiDraw()
+		}
 	}
 }