Available in LIB version 2015.1.0309, it will be also available in the 2015 Q1 SP1.
It's not just the rad windows the rad panes in the rad docking control do this to. So if it gets fixed can it be fixed in the rad pane to? (not sure if they share a base class? Or just common code for the dragging!)
I also get this issue and reported 1/17/2015. No word on when this will be updated.
I also have the same Issue today after migrating using RadWindow and the close button on right area are cropped half upon window opening. here the illustration of described issue https://www.dropbox.com/s/863y5vuim3ckxy4/RadWindow.PNG
I have exactly the same problem with the same conditions. More one year I can't use my main screen !!
I have the same problem. My primary monitor is a laptop monitor 15.4"(1366x768) and the sencondary monitor is desktop monitor 22"(1920x1080)