286604 2025-01-27 17:59:26 -0800 starlink.com: no deceleration scrolling (momentum) on pages with non-root `background-attachment: fixed` in overflow scroll 2025-01-28 13:44:31 -0800 1 1 1 Unclassified WebKit Scrolling WebKit Nightly Build Unspecified Unspecified RESOLVED FIXED InRadar P2 Normal --- 1 simon.fraser simon.fraser simon.fraser webkit-bug-importer oldest_to_newest 2090073 0 simon.fraser 2025-01-27 17:59:26 -0800 Pages with `background-attachment: fixed` on something inside an `overflow:scroll` lose momentum scrolling in that scroller. <rdar://129302721> 2090074 1 474032 simon.fraser 2025-01-27 18:11:18 -0800 Created attachment 474032 Patch 2090193 2 simon.fraser 2025-01-28 09:05:40 -0800 Pull request: https://github.com/WebKit/WebKit/pull/39624 2090270 3 ews-feeder 2025-01-28 13:44:29 -0800 Committed 289465@main (b0183a117729): <https://commits.webkit.org/289465@main> Reviewed commits have been landed. Closing PR #39624 and removing active labels. 474032 2025-01-27 18:11:18 -0800 2025-01-27 18:11:18 -0800 Patch overflow-scroll-fixed-background.patch text/plain 4580 simon.fraser Y29tbWl0IGUzMDUyM2VkZGM4ZjVmYTk4ODc2Yjk3NThlZmNhZjI3YzE2YzVlNDMgKEhFQUQgLT4g ZW5nL25vLW1vbWVudHVtLXNjcm9sbCkKQXV0aG9yOiBTaW1vbiBGcmFzZXIgPHNpbW9uLmZyYXNl ckBhcHBsZS5jb20+CkRhdGU6ICAgTW9uIEphbiAyNyAxODowMDozNCAyMDI1IC0wODAwCgogICAg c3RhcmxpbmsuY29tOiBubyBkZWNlbGVyYXRpb24gc2Nyb2xsaW5nIChtb21lbnR1bSkgb24gcGFn ZXMgd2l0aCBub24tcm9vdCBgYmFja2dyb3VuZC1hdHRhY2htZW50OiBmaXhlZGAgaW4gb3ZlcmZs b3cgc2Nyb2xsCiAgICBodHRwczovL2J1Z3Mud2Via2l0Lm9yZy9zaG93X2J1Zy5jZ2k/aWQ9Mjg2 NjA0CiAgICByZGFyOi8vMTI5MzAyNzIxCiAgICAKICAgIFJldmlld2VkIGJ5IE5PQk9EWSAoT09Q UyEpLgogICAgCiAgICBEdXJpbmcgdGhlIG1vbWVudHVtIHBoYXNlIG9mIGEgdHdvLWZpbmdlciB0 cmFja3BhZCBzY3JvbGwsIHdlIHN5bnRoZXNpemUgZXZlbnRzIHZpYQogICAgTW9tZW50dW1FdmVu dERpc3BhdGNoZXIuIFRoZXNlIGV2ZW50cywgaGFuZGxlZCBieQogICAgYFJlbW90ZUxheWVyVHJl 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