Fix macOS 26 (Tahoe) exaggerated rounded corners

Apple rounded the edges of Mac screens even more in macOS 26 (“Tahoe”), and one developer launched CornerFix to make those corners look straight again using a simple overlay. It doesn’t touch apps, just the screen’s outline. But the internet didn’t show up for the tech — it came for the drama. The loudest voice? “This only modifies the desktop corners, not app windows,” snapped altairprime, calling the title misleading. Others piled in with the classic courtroom chant: screenshots or it didn’t happen. cweagans and vishnuharidas wanted proof before vibes, and puppycodes asked the question of the day: why show the problem but not the solution?

Fans say CornerFix is a harmless way to reclaim attention from Apple’s bubbly design, complete with auto dark/light colors and multi‑monitor support. Skeptics say the blog reads like a position paper on rounded corners and want less philosophy, more pixels. msephton even begged the original poster for a live shot of the fix. The tool might be SIP‑safe (Apple’s system protection) and click‑through, but this thread turned into Cornergate: aesthetics versus evidence. If you want the backstory, here’s the Medium post, but bring a measuring tape and a camera — the crowd won’t believe your sharper edges without receipts.