Nimbus L&F: ToolBar placed at the left/right of the Frame does not show up all its components

Nimbus L&F: ToolBar placed at the left/right of the Frame does not show up all its components
This is observed on Nimbus L&F on all OSes, with the current 6u4b02 pit build.
Steps to reproduce:
1)Run the attached with the current 6u4_b02 pit build with Nimbus L&F.
2)Drag the toolbar and place it at the left/right of the Frame.
Observe that the toolbar components are not visible.
There are couple of more issues with Toolbars placed at either side of the Frame:
1)Once placed at the left/right, if you detach the toolbar so that it appears with its vertical legnth larger than the horizontal length, after a few seconds the toolbar rendering shows some random flickering. This is very clearly visible on a solarisX86 system. On a Windows system(I tried it on Winxp prof) the toolbar ui flickers only once.
2)One of the system which had SolDev Express (which was an old system with amd64 arch) on which I reproduced this issue, the flickering was extremely bad and the toolbar moved to the left edge of the screen, and for a while the keyboard interaction was frozen: - the CPU usage showed a spike which stayed very close to 100% during this time. This problem was not seen on the other solaris-amd64 system which has a high end configuration.