src/Pure/GUI/popup.scala

--- a/src/Pure/GUI/popup.scala	Thu Jul 11 11:13:21 2024 +0200
+++ b/src/Pure/GUI/popup.scala	Thu Jul 11 11:39:36 2024 +0200
@@ -22,7 +22,7 @@
     component.setSize(size)
     component.setPreferredSize(size)
     component.setOpaque(true)
-    layered.add(component, JLayeredPane.DEFAULT_LAYER)
+    layered.add(component, JLayeredPane.POPUP_LAYER)
     layered.moveToFront(component)
     layered.repaint(component.getBounds())
   }