I have experimented the same problem described in issue 53
http://code.google.com/p/seaglass/issues/detail?id=53.
I find a solution to this problem, only removing one line of
SeaGlassPopupMenu.
I think the problem is caused because fails setting non opaque the
content window.
This is de "bug" code:
Window window = SwingUtilities.getWindowAncestor(popupMenu);
if (PlatformUtils.isMac() && window != null) {
WindowUtils.makeWindowNonOpaque(window);
}
My modification:
Window window = SwingUtilities.getWindowAncestor(popupMenu);
if (PlatformUtils.isMac() && window != null) {
// WindowUtils.makeWindowNonOpaque(window);
}