Hi guys, just upgraded my Cubase 6.5 to the 8 pro version on my iMac (Core 2 Duo, 8 GB RAM, Yosemite) 
As a first issue, I see that my Stylus RMX and Sonik Synth 2 windows have a strange behaviour: when I try to select sounds, I can hear the new sound but graphically nothing happens until I click on the virtual keyboard (Sonik Synth) or I click somewhere in a menu list (Stylus); as soon as I do that, then I can see the new preset in the window…
I know these vst are not so new, but is there something I can try to test or solve?
Thank you!