probably you are running into an issue with HydraVision. Can you please check if it is installed and if so just uninstall it. HydraVision comes as a package with the driver. To uninstall it you need to open the Windows Control Panel, choose Programs and Features. Then select the AMD Catalyst Install Manager and choose Change. It will start the install shield and the uninstall manager will allow you to remove HydraVision.
Please let me know if this solves the issue. If so we need to look into the details why it was maximizing the windows.
That was the culprit, thanks a lot. I liked having the grid feature for "attaching to grid" but I will have too live without it.