Re-Activation - How long does Support take to reply (Answer: 8 days for me)

The problem is not only my problem, so i didn’t start a thread myself, but i “hooked on” on a couple of other topics where users describe the same "mixer selection sync"problem. In the “issues” part of the c9 part of the forum. Here are 2 of them:

I also submitted a support ticket, (See attachment)

i made a video to show: Dropbox - File Deleted - Simplify your life
So in a nutshel, the problem:
if you select a (group( channel in (any) mixer when the folder of the group tracks in the arranger window is closed, the group channel does not get unselected if you select another channel in the arranger window.
I have checked if this problem was there in the 9 version of cubase, but it was not there.