Cannot drag and drop radiobutton on groupbox
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When I try to drag radiobutton and drop it on groupbox, the radiobutton never drops into groupbox but always behind it which makes radiobutton invisible because groupbox is in front. There is some option that groupbox is always on top. How to disable that so I can add radiobutton INTO/on groupbox and not behind the groupbox? Tried right click on groupbox - control - send to back but its not working. 