Resizing windows on macOS Tahoe – the saga continues
macOS 26.3, Release Candidate In the release notes for macOS 26.3 RC, Apple stated that the window-resizing issue I demonstrated in my recent blog post had been resolved. I was happy to read that, but also curious about what had actually changed. So I wrote a little test app. It performs a pixel-by-pixel scan in the area around the bottom-right corner of the window, hammering it with simulated mouse clicks to detect exactly where it responds to those clicks (red), where it’s about to resize (green), where it’s about to resize vertically or horizontally only (yellow), and where it doesn’t receive any mouse events at all (blue). And indeed, the window resize areas now follow the corner radius instead of using square regions: So that’s definitely better! But unfortunately, as…
