message: Fix the pop up background
diff: @@ -53,8 +53,9 @@ export class WindowPopOver {
  #createPopUp(): void {
  this.#popUp = Widget({
  cssClass: ["transparent"],
  - windowFlag: WindowType.Popup,
  + windowFlag: WindowType.Popup | WindowType.FramelessWindowHint,
  attribute: [
  + WidgetAttribute.WA_NoSystemBackground,
  WidgetAttribute.WA_WindowPropagation,
  WidgetAttribute.WA_X11NetWmWindowTypePopupMenu,
  WidgetAttribute.WA_TranslucentBackground
  