I don't know about your midi pan/volume, etc... issues ...I have never seen that.
I can definitely tell you that this never happend in VE PRO, but like I said before that could have been pre-Kontakt 5. I really wish Vienna would look into this as I struggle with this EVERY SINGLE DAY.
You are the first person to post that has the exact same problem as I do. I know several others that have the problem b ut do not post in this forum. If others have this problem I would love to knopw as it would help to get Vienna to look into it.