Dialog Launcher showing on collapsed group panel

I think this is a bug: The ShowDialogLauncher is set to false for a group. When the group is in large, medium or small mode the launcher button is not visible. However when the group is collapsed and you click the button to display the popup, the dialog launcher button is visible even though the ShowDialogLauncher is false. Can someone from divelements confirm this?

You are correct, this was a bug. It has been fixed for the 1.0.1 release.