A nice short analysis of window resizing in macOS Tahoe by Nobert Heger:

Since upgrading to macOS Tahoe, I’ve noticed that quite often my attempts to resize a window are failing. This never happened to me before in almost 40 years of using computers. So why all of a sudden?

I understand this might be the casualty of the absurdly large border radii in the new macOS.

The little video in the middle made me laugh:

(I do think there is room for gestures triggered “outside” a window, and we’ve seen rotation and some specific flavors of resizing or cropping work this way in drawing and design apps across the last few decades – but one has to be careful. Often, those are secondary and/or for power users.)