193534 2019-01-17 07:47:30 -0800 [LFC][BFC] An element with transform is a containing block for positioned descendants. 2019-01-17 08:25:28 -0800 1 1 1 Unclassified WebKit Layout and Rendering WebKit Nightly Build Unspecified Unspecified RESOLVED FIXED InRadar P2 Normal --- 1 zalan zalan bfulgham koivisto simon.fraser webkit-bug-importer zalan oldest_to_newest 1495457 0 zalan 2019-01-17 07:47:30 -0800 ssia 1495460 1 zalan 2019-01-17 07:54:10 -0800 For elements whose layout is governed by the CSS box model, any value other than none for the transform property also causes the element to establish a containing block for all descendants. https://www.w3.org/TR/css-transforms-1/ 1495462 2 359376 zalan 2019-01-17 07:59:09 -0800 Created attachment 359376 Patch 1495473 3 koivisto 2019-01-17 08:14:25 -0800 You could update the comment above too. 1495477 4 zalan 2019-01-17 08:24:21 -0800 Committed r240111: <https://trac.webkit.org/changeset/240111> 1495478 5 webkit-bug-importer 2019-01-17 08:25:28 -0800 <rdar://problem/47351671> 359376 2019-01-17 07:59:09 -0800 2019-01-17 08:13:32 -0800 Patch bug-193534-20190117075852.patch text/plain 3678 zalan U3VidmVyc2lvbiBSZXZpc2lvbjogMjQwMDk0CmRpZmYgLS1naXQgYS9Tb3VyY2UvV2ViQ29yZS9D aGFuZ2VMb2cgYi9Tb3VyY2UvV2ViQ29yZS9DaGFuZ2VMb2cKaW5kZXggZmIyMGQ0N2QwMjgxZjM0 NWNjODcyMDE3NTEzNTk5YjVmM2E3MDM3Ni4uNmZmMjE1NzNkZDhhMmRlMTJhMTdhZWVkMDU4NGE5 YmRhMWQxNTNjNyAxMDA2NDQKLS0tIGEvU291cmNlL1dlYkNvcmUvQ2hhbmdlTG9nCisrKyBiL1Nv dXJjZS9XZWJDb3JlL0NoYW5nZUxvZwpAQCAtMSwzICsxLDE3IEBACisyMDE5LTAxLTE3ICBaYWxh biBCdWp0YXMgIDx6YWxhbkBhcHBsZS5jb20+CisKKyAgICAgICAgW0xGQ11bQkZDXSBBIGJsb2Nr IGVsZW1lbnQgd2l0aCB0cmFuc2Zvcm0gaXMgYSBjb250YWluaW5nIGJsb2NrIGZvciBwb3NpdGlv bmVkIGRlc2NlbmRhbnRzLgorICAgICAgICBodHRwczovL2J1Z3Mud2Via2l0Lm9yZy9zaG93X2J1 Zy5jZ2k/aWQ9MTkzNTM0CisKKyAgICAgICAgUmV2aWV3ZWQgYnkgTk9CT0RZIChPT1BTISkuCisK KyAgICAgICAgIkZvciBlbGVtZW50cyB3aG9zZSBsYXlvdXQgaXMgZ292ZXJuZWQgYnkgdGhlIENT 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