239946 2022-05-01 13:07:56 -0700 [css-overflow] an element's scrolling area must include the margin bottom of its last descendant 2024-01-03 13:50:28 -0800 1 1 1 Unclassified WebKit CSS Safari 15 All macOS 11 NEW http://wpt.live/css/css-overflow/margin-block-end-scroll-area-001.html InRadar, WPTImpact P2 Normal --- 1 browserbugs2 webkit-unassigned ahmad.saleem792 simon.fraser webkit-bug-importer zalan oldest_to_newest 1865731 0 browserbugs2 2022-05-01 13:07:56 -0700 Description - - - - - - The bottom edge of an element's scrolling area is the bottom margin edge of all of the element's descendants boxes. Therefore, an element's scrolling area height must include the margin bottom of its last descendant. Tests ----- WPT Test: http://wpt.live/css/css-overflow/margin-block-end-scroll-area-001.html Reference: http://wpt.live/css/css-overflow/reference/ref-if-there-is-no-red.xht Test results: https://wpt.fyi/results/css/css-overflow/margin-block-end-scroll-area-001.html?label=master https://wpt.fyi/results/css/css-overflow/margin-block-end-scroll-area-001.html?label=experimental Blink equivalent bug report: https://bugs.chromium.org/p/chromium/issues/detail?id=750992 The test fails with Epiphany 3.38.2 (WebKitGTK 2.36.0). A green-versus-red variation of the test above: http://www.gtalbot.org/BrowserBugsSection/CSS3LogicalProps/margin-block-end-scroll-area-002.html Related specs - - - - - - - 2.2 Scrollable Overflow https://www.w3.org/TR/css-overflow-3/#scrollable 6. Extensions to the Element Interface; scrollTop attribute https://www.w3.org/TR/cssom-view-1/#dom-element-scrolltop Scrolling area definition https://www.w3.org/TR/cssom-view-1/#scrolling-area 1867535 1 webkit-bug-importer 2022-05-08 13:08:18 -0700 <rdar://problem/92928629>