Bug? Korg M1-VST causes OS X Menu Bar disturbance

Cubase 6.0.3 (running 32bit), OS X 10.7.1 (11B26)

Opening the GUI of Korg M1 Version 1.6.4 (which is the newest available to this date) via the Edit Instrument-Function causes the OS X Menu Bar to change from

Apple - Cubase - File - Edit - etc.

to

Apple - Cubase - Cubase - File - Edit - etc.

Reproducible - always, remains until restart of Cubase.

Besides this one:
https://www.steinberg.net/forum/viewtopic.php?f=19&t=6176&p=41060#p41060
…there’s another thread on the subject. Basically, it appears that all of the KORG plug-ins and Plogue’s Bidule will do this in C6. Plogue’s Sebastien has acknowledged the bug and is looking into it. KORG is probably completely unaware of it.