Apple icon on menubar does not display appropriate
 

I have a macbook pro late 2011 with mavericks 10.9.3, and installed DisplayLink v2.2.

I have two BENQ monitors, one is connected to MBP via 'apple-mini-dvi-to-dvi-adapter', and another is connected to MBP with a DisplayLink device.

Left one is via 'apple-mini-dvi-to-dvi'
Right one is via DisplayLink

http://s21.postimg.org/rp3slcj3r/image.png

You can see if I put menubar on MBP, the black apple icon on left of the menubar of DisplayLink connected monitor does not display appropriate.

But if I move menubar to DisplayLink connected monitor, it displays well.

http://s3.postimg.org/tmr5sgq8j/image.png

It's a known issue in Mavericks. Please raise a bug at bugreport.apple.com

Cheers,
Carlo