261752 2023-09-19 09:43:17 -0700 When a block quote exactly reaches the bottom of a column, its margin affects the subsequent column [Multicolumn] 2023-09-26 09:44:14 -0700 1 1 1 Unclassified WebKit Layout and Rendering Safari 16 Mac (Apple Silicon) macOS 13 NEW https://bugs.webkit.org/show_bug.cgi?id=212505 InRadar P2 Normal --- 1 bya webkit-unassigned bfulgham simon.fraser webkit-bug-importer zalan oldest_to_newest 1978324 0 467755 bya 2023-09-19 09:43:17 -0700 Created attachment 467755 HTML showing the blockquote margin improperly affecting the next column I have a <blockquote> that exactly reaches the bottom of a column. Even though it is entirely contained within a single column, the margin-bottom affects the next column. However, if I decrease the margin-top of the <blockquote> by a single pixel – so that the bottom of the <blockquote> no longer reaches the bottom of the column - then the margin-bottom doesn't affect the subsequent column at all. This is similar to WebKit bug #212505 (https://bugs.webkit.org/show_bug.cgi?id=212505). It doesn’t seem to be identical, though, because that bug identifies different behavior depending on whether the browser is in quirks mode. For this bug, the behavior is the same regardless of the rendering mode. 1978325 1 467756 bya 2023-09-19 09:44:12 -0700 Created attachment 467756 HTML showing the same behavior as the previous attachment, but in “standard” mode 1980193 2 webkit-bug-importer 2023-09-26 09:44:14 -0700 <rdar://problem/116060548> 467755 2023-09-19 09:43:17 -0700 2023-09-19 09:43:17 -0700 HTML showing the blockquote margin improperly affecting the next column column-with-blockquote-in-quirks.html text/html 2275 bya PGh0bWw+CiAgICA8aGVhZD4KICAgICAgICA8c3R5bGU+CiAgICAgICAgICAgIGJvZHkgewogICAg ICAgICAgICB9CiAgICAgICAgICAgIC5jb2x1bW5zIHsKICAgICAgICAgICAgICAgIGhlaWdodDo0 MDBweDsKICAgICAgICAgICAgICAgIG1hcmdpbjoyMHB4OwogICAgICAgICAgICAgICAgd2lkdGg6 MzAwcHg7CiAgICAgICAgICAgICAgICBjb2x1bW4td2lkdGg6IDY1MHB4OwogICAgICAgICAgICAg ICAgY29sdW1uLWdhcDoyMHB4OwogICAgICAgICAgICB9CiAgICAgICAgICAgIC5jb2x1bW5zLWJn IHsKICAgICAgICAgICAgICAgIGJhY2tncm91bmQtY29sb3I6IGxpZ2h0Z3JheTsKICAgICAgICAg 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