210618 2020-04-16 14:25:32 -0700 A slow-starting swipe always latches on the root node 2020-04-16 16:05:34 -0700 1 1 1 Unclassified WebKit Scrolling Safari Technology Preview Unspecified Unspecified RESOLVED FIXED InRadar P2 Normal --- 1 simon.fraser simon.fraser cmarcelo ews-watchlist fred.wang jamesr luiz simon.fraser thorton tonikitoo webkit-bug-importer oldest_to_newest 1642431 0 396698 simon.fraser 2020-04-16 14:25:32 -0700 Created attachment 396698 testcase Start a slow swipe over an overflow:scroll, and we'll always latch on the main frame by mistake. The first event we get has zero deltas, so ScrollingTreeScrollingNode::canScrollWithWheelEvent() returns false for non-root nodes, and true for root nodes. Then we latch on the root node for the rest of the gesture. 1642432 1 webkit-bug-importer 2020-04-16 14:25:49 -0700 <rdar://problem/61903663> 1642441 2 396703 simon.fraser 2020-04-16 15:05:51 -0700 Created attachment 396703 Patch 1642479 3 ews-feeder 2020-04-16 16:05:33 -0700 Committed r260224: <https://trac.webkit.org/changeset/260224> All reviewed patches have been landed. Closing bug and clearing flags on attachment 396703. 396698 2020-04-16 14:25:32 -0700 2020-04-16 14:25:32 -0700 testcase nested-overflow-scroll.html text/html 1104 simon.fraser PCFET0NUWVBFIGh0bWw+CjxodG1sPgo8aGVhZD4KICAgIDxzdHlsZT4KICAgICAgICBib2R5IHsK ICAgICAgICAgICAgaGVpZ2h0OiAyMDAwcHg7CiAgICAgICAgfQoKICAgICAgICAuc2Nyb2xsZXIg ewogICAgICAgICAgICBtYXJnaW46IDUwcHg7CiAgICAgICAgICAgIHdpZHRoOiA1MDBweDsKICAg ICAgICAgICAgaGVpZ2h0OiA1MDBweDsKICAgICAgICAgICAgb3ZlcmZsb3c6IGF1dG87CiAgICAg ICAgICAgIGJvcmRlcjogMjBweCBzb2xpZCByZ2JhKDAsIDAsIDIwMCwgMC43NSk7CiAgICAgICAg ICAgIGJveC1zaGFkb3c6IDAgMCAyMHB4IHJnYmEoMCwgMCwgMCwgMC43NSk7CiAgICAgICAgICAg IHBhZGRpbmc6IDEwcHg7CiAgICAgICAgICAgIGxpbmUtaGVpZ2h0OiAxLjVlbTsKICAgICAgICB9 CiAgICAgICAgCiAgICAgICAgLnNjcm9sbGVyIC5zY3JvbGxlciB7CiAgICAgICAgICAgIHdpZHRo OiA0NTBweDsKICAgICAgICAgICAgbWFyZ2luOiAxMHB4OwogICAgICAgIH0KICAgICAgICAKICAg ICAgICAuZmlsbGVyIHsKICAgICAgICAgICAgaGVpZ2h0OiAzMDBweDsKICAgICAgICAgICAgd2lk 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