Regression: No!!

Package: J2SE

Version:
 java version "1.6.0-ea"
 Java(TM) 2 Runtime Environment, Standard Edition (build 1.6.0-ea-b54)
 Java HotSpot(TM) Client VM (build 1.6.0-ea-b54, mixed mode)

 java version "1.5.0_05"
 Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_05-b05)
 Java HotSpot(TM) Client VM (build 1.5.0_05-b05, mixed mode)

Platform:
  SunOS jihlava 5.10 Generic_Patch i86pc i386 i86pc

bundles tested:
jdk-6_0-ea-bin-b54-solaris-i586-29_sep_2005.sh
jdk-6_0-ea-bin-b48-solaris-i586-18_aug_2005.sh

Failure Symptom:
  JTabbedPane's tabs are wrongly redrawn while unsing GTK+ L&F and certain GTK+ skins (issue is visible using default JDS skin on Solaris). See attached screenshot for detailed info. Run the attached program to reproduce the bug.

Reproduce Steps:
1) Run the atached program
2) Move an internal window (JInternalFrame) up, so the titlebar is partially hidden under the JTabbedPane's tabs.
3) Switch to another tab
4) Switch to the original tab
5) Check the wrongly redrawn tabs

Please, see the Reproduce Steps carefully. this bug occures on older builds of mustang and on tiger too.
it is not duplicate of regression bug 6317200.