Plugin window size issues?

A content user of Cubase 6 for about a year (unfortunate for the grace period update) using the forum for the first time…

I’ve come across a minor issue with using Reaper’s Reaplugs VST FX suite - whilst they seem to work alright (I have seen other forums, both here and elsewhere, about them not working at all and crashing Cubase), it’s just an issue with the window size of the plugin editor not being big enough to show the whole gui:
cubreap.png
I don’t have this problem on my secondary PC with a 32 bit installation of Cubase, where the plugin works fine, however, so it’s really beyond me why this happens in my 64 bit installation… Given that it’s presumably just a minor gui issue, I’m sure the solution can’t be too difficult, but after searching extensively, I’m still none the wiser…

Any ideas on how to solve this?

As I understand it when running Cubase in 64bit mode, any 32 bit plugins are run under a Bridge connection, and this can only show the full plugin GUI for one of the plugs - the others are shown with a generic GUI.

It will be solved when all plugs are 64bit…