TL;DR
Users report frequent failed attempts to resize windows after upgrading to macOS Tahoe. The OS's much larger corner radius pushes the active resize target mostly outside the visible window, forcing users to click outside the corner to resize.
What happened
After upgrading to macOS Tahoe, the author and other commenters noticed a new problem beyond the visual change of much larger window corner rounding: window resize attempts often fail. macOS expects the initial resize click to occur within a 19 × 19 pixel target zone positioned near the window corner. With square or small-radius corners, a majority of that area sits inside the visible window, but Tahoe’s large corner radius shifts roughly three quarters of that target outside the window’s visible bounds. As a result, instinctive attempts to grab the corner from inside the window—where users typically place the cursor—do not register. The practical workaround is to click outside the rounded corner where the OS still recognizes the resize gesture, but that interaction feels counterintuitive and increases the chance of errors. The writer notes this break in expected behavior after nearly 40 years of using computers.
Why it matters
- A mismatch between visual design and interactive hit areas can degrade everyday productivity.
- Users’ muscle memory for grabbing window corners no longer matches the system’s active target, causing frustration and errors.
- Accessibility and discoverability of basic window controls can be negatively affected when visual cues don’t align with interactive zones.
- Design changes that prioritize aesthetics over interaction geometry can introduce usability regressions for long‑time users.
Key facts
- Issue observed after upgrading to macOS Tahoe.
- macOS expects the initial resize click within a 19 × 19 pixel area near the window corner.
- With small or no corner radius, about 62% of that 19 × 19 area lies inside the visible window.
- Tahoe’s large corner radius causes roughly 75% of that target area to fall outside the visible window.
- Users instinctively click inside the visible corner area, which often misses the system’s active resize zone.
- The reliable workaround is to click outside the rounded corner where the OS accepts the resize gesture.
- The author reports this as a new problem after almost 40 years of using computers.
- Some commenters have described Tahoe’s corner radius as visually exaggerated or comical.
What to watch next
- Whether Apple adjusts the corner radius or the active resize target area in a future update — not confirmed in the source.
- User feedback and reports about resizing accuracy increasing across forums and social media — not confirmed in the source.
- Any official guidance from Apple about resizing behavior or accessibility settings to mitigate this — not confirmed in the source.
Quick glossary
- Corner radius: The curvature applied to the corners of a window or UI element, measured as the radius of the rounded corner.
- Hitbox / target area: The pixel area where the system detects input (clicks or taps) for a specific control or gesture.
- Resize handle: The edge or corner region of a window that a user interacts with to change the window’s size.
- macOS Tahoe: A named release of Apple’s macOS operating system referenced in the source; specific version details are not provided in the source.
Reader FAQ
Why are my attempts to resize windows failing in Tahoe?
The OS requires the initial resize click to occur in a 19 × 19 pixel target near the corner; Tahoe’s large corner radius pushes most of that target outside the visible window, so clicks inside the visible corner often miss.
Is clicking outside the corner the only way to resize?
According to the report, the most reliable method is to click outside the rounded corner where the OS accepts the resize gesture.
Is this a confirmed bug that Apple will fix?
not confirmed in the source
Can I change settings to restore the old behavior?
not confirmed in the source
The struggle of resizing windows on macOS Tahoe January 11, 20262 Min readIn macOS A lot has already been said about the absurdly large corner radius of windows on macOS…
Sources
- The struggle of resizing windows on macOS Tahoe
- Option to disable or reduce the Tahoe 26 …
- Blog – Tahoe Window Corners
- Reclaiming the Screen: A Developer's Fix for macOS 26's …
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