The separator is not shown after pressing "add separator" button with the specical option "-Dswing.defaultlaf=com.sun.java.swing.plaf.gtk.GTKLookAndFeel".

Testsuite name:JCK manual
Test name:api/javax_swing/interactive/JMenuTests.html#JMenu
Product tested: JDK 8 u40 b11 64bit
OS/architecture:Oel6.4-uek-x64
 
Actual behavior:
1.There is no separator added to the popup menu after pressing the "Add separator" button.refer to JMenu.jpg.
2.As for JMenuTest0007:
Inserted the separator to the popup menu,the status show "Separator inserted".But we can not see the separator from the popup menu,refer to JMenu1.jpg.
3.There is no this issue without the special options,refer to JMenu2.jpg and JMenu3.jpg.


The case has the same issue:
api/javax_swing/interactive/JPMenuTests.html#JPMenuTests