Marco Rinck on Twitter: "When #Safari opens so much (empty, non-working) #webconsole windows that you get a really nice and thick box shadow because the shadows of each window add up. #bug
CSS custom properties in box-shadow color function render incorrectly in Safari - Stack Overflow
Border Radius and Inset Box Shadow Bug solution! - SitePoint
Mobile Safari scrolling problem with an input field inside a fixed DIV | Igor Kromin
Box-shadow trimmed in CSS columns in Chrome - Stack Overflow