Nope, I added it to the cc. I tested it again. I tried it with a themedlinkmenu, and it works fine, only if I set anchor to bottom. It doesn't work at all with a textbox. Linklabel will work if I set anchor to bottom but autogrow to false.
However, it only stops working when I remove the action bar and add the notificationarea. The size of the control is 149, 145, and I made sure that the controls are in the middle.
I have three cc's in a vertical row in a flowlayoutpanel. When I move the controls to the other cc's without a notification area, it works fine (I don't have to set the anchor to bottom). Also, if I have a notification area and an action bar, the cc works fine. But remove the actionbar and keep the notification area and it breaks.
Apparently, when you remove the actionbar, the cc, control container edge becomes the bottom of the cc, even it contains a notification area, and the controls overlap the notification area.
At least that's what it is doing of my machine.