vst's in middle of the screen and not movable, why?

Hi,

if I’m loading some VST instruments, they appear in the middle of the screen and also not movable, only centred. Is that a bug or does it have to do with cubase settings or are the vst’s just to old?

Thanks

Maybe its a 32 bit VST instrument?

o/s? 32 or 64bit Cubase? 32 or 64 bit plugs? What plugs specifically?