id summary reporter owner description type status component version resolution keywords cc guest host 15646 Use Unscaled HiDPI causes broken display behavior Ben2D2 "When I enable Use Unscaled HiDPI and run my Win10 VM, the screen starts off normal, but after 1 or 2 seconds stretches vertically to about 125% height but normal width, with the bottom of the virtual screen clipped off inside the VM window. When I start moving the mouse inside the VM window, the screen scaling jumps around and I get strange artifacts. This happens when Unscaled HiDPI is enabled, and not when it is disabled. Things that do not affect this behavior: 3D acceleration, 2D video acceleration, VM ram, video ram MacbookPro Retina mid-2014 OSX 10.11.6 running VirtualBox 5.1.0 and a Windows 10 guest with latest additions. " defect closed GUI VirtualBox 5.1.0 obsolete Windows Mac OS X