294323 2025-06-11 07:14:54 -0700 incorrect clipping for background-color on double border with attachment:local and border-radius 2026-04-30 18:19:55 -0700 1 1 1 Unclassified WebKit Layout and Rendering WebKit Nightly Build Unspecified Unspecified NEW https://bugs.webkit.org/show_bug.cgi?id=206753 http://wpt.live/css/css-backgrounds/background-attachment-local/attachment-local-clipping-color-4.html InRadar, WPTImpact P2 Normal --- 1 karlcow webkit-unassigned bfulgham koivisto simon.fraser webkit-bug-importer zalan oldest_to_newest 2122989 0 karlcow 2025-06-11 07:14:54 -0700 <div id="outer"> <div> <p>Test</p> </div> </div> #outer { width: 200px; height: 200px; padding: 40px; border: 10px double; overflow: hidden; border-radius: 50%; background: green local border-box; } The green is overflowing in between the two lines of the border. The painting should happen only inside the inner border line. http://wpt.live/css/css-backgrounds/background-attachment-local/attachment-local-clipping-color-4.html http://wpt.fyi/css/css-backgrounds/background-attachment-local/attachment-local-clipping-color-4.html 2123010 1 webkit-bug-importer 2025-06-11 09:16:32 -0700 <rdar://problem/153089071>