I am currently running a utility to square off the window borders in Windows 11.

on KDE5-6, ironically, to have high-contrast windows and square borders, one must use something written because the author wanted round corners on older versions of kde :)

https://github.com/matinlotfali/KDE-Rounded-Corners

	▲	WillAdams 20 hours ago \| parent [-]
		Given the complexities which anything but square corners adds to screen grabs, I've never understood why anyone would want to use such.