JRadioButtonMenuItem and JCheckBoxMenuItem look incorrect in GTK laf on Gnome2.16

Snv 48, vermillion 50 dev build, gnome 2.16, both sparc and x86 platform.

jdk1.6.0-rc b99

Steps:

1. Start a Frame with JMenu (in the attachment there is a simple testcase)
2. Click the Radio Button and Check Box menu items

expected result:
On Gnome2.14 all items look correct
acual result:
On Gnome 2.16, for the radio button items have no small circle in from of text when the item is not selected, if this item is selected there is a diamond in from of the text instead of a point inside the circle. For the check box items, no small square in front of text when the item is not selected.