Problem with Blended and Contoured objects

[Centaurus]

Hello Gary,

Please see the attached files.
Open bug.xar file and arrange two views like it is shown on bug_pre.png.

Then try to use any object inside of Blend or Contour group using Ctrl key and try to do something with it.. move, rotate, resize, etc. After that it stucks.

I understand there may be some unexpected bugs appearing in places which seem not to be affected by development... being a software developer myself for four years I know the complex software can be hard to pull together.
I was more upset of the fact that nobody apparently is going to fix it at all in the nearest future judging by the responses I got from the support team And since it's critical for me I'm trying to find a suitable workaround.
Anyway thank for your help Gary!