Misplaced Control At Design Time

I have created a simple window and added a desktop checkbox to it. As you can see from the screen shot the ‘oversized’ check area has decided it does not want to sit alongside the rest of the control. Underlined in red is where the control is, highlighted in yellow is where the check box is. The control renders fine at runtime but does not appear in the IDE at design time except as indicated. Any views as to the cause?

check the control parent and anchors
u mean the box is part of the use dates ? thats odd
i guess uses dates is a label.
this box looks like a custom control.

I have kept the window and will do that but I also noticed that at runtime the 'window title’ would not show so it appears to be properly broken in some way, this is a problem I have experienced in the past but not seen it for some time. I had to rebuild the window from scratch and put the controls back on it and the new version works fine.

The box was part of the standard Desktop Checkbox which is above the Einhugur Date Controls.