UX Fail: Invisible Title Bar Bounds

The minimalistic design aesthetic that’s pervading the software world has produced some spectacular UX fails. Here is an example from Windows 10. The subject is the humble Notepad application, but the same issue can be seen in other place. Notice how there is no visible separation between the title bar and the menu bar. Both have white background. The problem is that a user with a mouse needs to know the bounds of the title bar in order to be able to drag the window. Without visible bounds and without any other feedback (such as changing of the mouse pointer), the user is left to click and try. Sometimes the window moves, sometimes the window doesn’t move. In other words, a UX fail.