Uneven border-radius / box-shadow combina… - Apple Community
Apple Releases Safari Technology Preview 137 Release Offers Bug Fixes and Performance Improvements
Are there any workarounds for this Mobile Safari box-shadow bug? - Stack Overflow
Border Radius and Inset Box Shadow Bug solution! - SitePoint
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