293227 2025-05-19 04:50:03 -0700 Element.scrollBy() doesn't snap with scroll-snap-type mandatory 2025-07-08 18:20:36 -0700 1 1 1 Unclassified WebKit Scrolling Safari 18 Unspecified Unspecified NEW https://bugs.webkit.org/show_bug.cgi?id=241737 InRadar P2 Normal --- 1 webkit.bugzilla webkit-unassigned ahmad.saleem792 karlcow simon.fraser webkit-bug-importer webkit.bugzilla woodlxf00 oldest_to_newest 2118077 0 475302 webkit.bugzilla 2025-05-19 04:50:03 -0700 Created attachment 475302 Demo Expected behavior (works in Firefox, Chrome): On each 1.5 seconds, the container should scroll and snap to the next snapping point. Actual behavior in Safari (on macOS and iOS): On each 1.5 seconds, the container scrolls by 1px, and doesn't snap to any snapping point. Demo: https://safari-auto-scroll-snap.glitch.me/ 2119692 1 webkit-bug-importer 2025-05-26 04:50:16 -0700 <rdar://problem/152036489> 2124451 2 ahmad.saleem792 2025-06-18 04:04:30 -0700 Does it affect any live website or mconverter.eu? 2124643 3 webkit.bugzilla 2025-06-18 18:56:20 -0700 (In reply to Ahmad Saleem from comment #2) > Does it affect any live website or mconverter.eu? Yes, this bug affects the auto-scrolling quotes on MConverter's live pricing page: https://mconverter.eu/#upgrade 2128588 4 woodlxf00 2025-07-08 18:20:36 -0700 Please pay extra attention to the decimal size case: Programmatic scroll don't meet CSS scroll snap when the stop item size is with non-integer size. The issue reproduces in both Chrome and Firefox. See also: https://issues.chromium.org/issues/423245958 https://bugzilla.mozilla.org/show_bug.cgi?id=1973652 475302 2025-05-19 04:50:03 -0700 2025-05-19 04:50:03 -0700 Demo Auto_scroll_snap.html text/html 1084 webkit.bugzilla PCFET0NUWVBFIEhUTUw+CjxodG1sPgo8aGVhZD4KICA8dGl0bGU+QXV0byBzY3JvbGwgc25hcDwv dGl0bGU+CiAgPG1ldGEgbmFtZT0idmlld3BvcnQiIGNvbnRlbnQ9IndpZHRoPWRldmljZS13aWR0 aCwgbWluaW11bS1zY2FsZT0xLCBpbml0aWFsLXNjYWxlPTEiPgogIAogIDxzdHlsZT4KICAgICNx dW90ZXMgewogICAgICAgIGRpc3BsYXk6IGdyaWQ7CiAgICAgICAgZ3JpZC1hdXRvLWZsb3c6IGNv bHVtbjsKICAgICAgICBnYXA6IDUwdnc7CgogICAgICAgIG92ZXJmbG93LXg6IGF1dG87CiAgICAg ICAgd2hpdGUtc3BhY2U6IG5vd3JhcDsKICAgICAgICBzY3JvbGwtc25hcC10eXBlOiB4IG1hbmRh dG9yeTsKICAgIH0KICAgICNxdW90ZXM6OmJlZm9yZSwgI3F1b3Rlczo6YWZ0ZXIgewogICAgICAg IGNvbnRlbnQ6ICcnOwogICAgICAgIGRpc3BsYXk6IGJsb2NrOwogICAgfQogICAgLnF1b3RlIHsK ICAgICAgICBkaXNwbGF5OiBpbmxpbmUtYmxvY2s7CiAgICAgICAgc2Nyb2xsLXNuYXAtYWxpZ246 IGNlbnRlcjsKICAgICAgICBzY3JvbGwtc25hcC1zdG9wOiBhbHdheXM7CiAgICAgICAgCiAgICAg ICAgaGVpZ2h0OiA1MHB4OwogICAgICAgIGJvcmRlcjogMXB4IHNvbGlkICMwMDA7CiAgICB9CiAg PC9zdHlsZT4KPC9oZWFkPgo8Ym9keT4KICA8ZGl2IGlkPSJxdW90ZXMiPgogICAgPGRpdiBjbGFz cz0icXVvdGUiPlRleHQgMTwvZGl2PgogICAgPGRpdiBjbGFzcz0icXVvdGUiPlRleHQgMjwvZGl2 PgogICAgPGRpdiBjbGFzcz0icXVvdGUiPlRleHQgMzwvZGl2PgogICAgPGRpdiBjbGFzcz0icXVv dGUiPlRleHQgNDwvZGl2PgogICAgPGRpdiBjbGFzcz0icXVvdGUiPlRleHQgNTwvZGl2PgogICAg PGRpdiBjbGFzcz0icXVvdGUiPlRleHQgNjwvZGl2PgogIDwvZGl2PgogIAogIDxzY3JpcHQ+CiAg ICBzZXRJbnRlcnZhbCgoKSA9PiB7CiAgICAgIGRvY3VtZW50LmdldEVsZW1lbnRCeUlkKCdxdW90 ZXMnKS5zY3JvbGxCeSh7CiAgICAgICAgICBsZWZ0OiAxLAogICAgICAgICAgYmVoYXZpb3I6ICdz bW9vdGgnCiAgICAgIH0pOwogICAgfSwgMTUwMCk7CiAgPC9zY3JpcHQ+CjwvYm9keT4KPC9odG1s Pg==