@Cykelero@mas.to Excellent talk! You made a very good point about how clever it is that you can move a window even if you start your mouse drag in the resize area. And in fact, this not only works at the top edge but at all four edges of the window. However, on macOS Tahoe this resize area now extends into the curvature of the rounded corner. You can see in this screenshot that the cursor still indicates a horizontal resize, even though it’s already inside the corner area, where you might expect to be able to resize diagonally. But if you try to do that, you will actually move the window.