This also exists in e.g. Chrome, if you manage to click the corner on the left of the first tab[1]
The way Chrome's UI is handled on Windows seems quite interesting in general. You can see glimpses of it when it breaks or some other program tries to make sense of it, such as screen recording of Chrome windows.
That window is how I always open Chrome's task manager. It's the only way I have discovered so far to open it without remembering the keyboard shortcut.
The way Chrome's UI is handled on Windows seems quite interesting in general. You can see glimpses of it when it breaks or some other program tries to make sense of it, such as screen recording of Chrome windows.
[1] http://i.imgur.com/mJSc2lR.png