Regression: several modal regression tests consistently pass on b120 but fail approximately since b123 on OS X. The tests check if a (modeless) child dialog is not overlapped by a parent frame or dialog.

RULE "java/awt/Modal/ToBack/ToBackModeless5Test.java" Exception java.lang.RuntimeException: The modeless dialog was pushed behind the parent left frame after toBack call.: expected false to equal true
RULE "java/awt/Modal/ToBack/ToBackModeless6Test.java" Exception java.lang.RuntimeException: The modeless dialog was overlapped by the parent dialog after calling toBack method.: expected false, was true
RULE "java/awt/Modal/ToBack/ToBackNonModal5Test.java" Exception java.lang.RuntimeException: The modeless dialog was pushed behind the parent left frame after toBack call.: expected false to equal true
RULE "java/awt/Modal/ToBack/ToBackNonModal6Test.java" Exception java.lang.RuntimeException: The modeless dialog was overlapped by the parent dialog after calling toBack method.: expected false, was true