198212 2019-05-23 21:52:42 -0700 Need a positioning node for transformed in clipping in overflow 2019-05-23 21:52:50 -0700 1 1 1 Unclassified WebKit Scrolling WebKit Nightly Build Unspecified Unspecified NEW P2 Normal --- 1 simon.fraser simon.fraser simon.fraser oldest_to_newest 1538933 0 370560 simon.fraser 2019-05-23 21:52:42 -0700 Created attachment 370560 Testcase Testcase shows jiggling of the sharing-preventer element. 370560 2019-05-23 21:52:42 -0700 2019-05-23 21:52:42 -0700 Testcase ancestor-clipping-layer-stationary.html text/html 2225 simon.fraser PCFET0NUWVBFIGh0bWw+IDwhLS0gd2Via2l0LXRlc3QtcnVubmVyIFsgdXNlRmxleGlibGVWaWV3 cG9ydD10cnVlIGludGVybmFsOkFzeW5jT3ZlcmZsb3dTY3JvbGxpbmdFbmFibGVkPXRydWUgXSAt LT4KPGh0bWw+CjxoZWFkPgogICAgPG1ldGEgbmFtZT0idmlld3BvcnQiIGNvbnRlbnQ9ImluaXRp YWwtc2NhbGU9MS4wIj4KICAgIDxzdHlsZT4KICAgICAgICAjc2Nyb2xsZXIgewogICAgICAgICAg ICBtYXJnaW46IDEwcHg7CiAgICAgICAgICAgIGhlaWdodDogMzAwcHg7CiAgICAgICAgICAgIHdp ZHRoOiAzMDBweDsKICAgICAgICAgICAgYm9yZGVyOiAxcHggc29saWQgYmxhY2s7CiAgICAgICAg ICAgIG92ZXJmbG93OiBzY3JvbGw7CiAgICAgICAgICAgIG9wYWNpdHk6IDAuOTsKICAgICAgICB9 CiAgICAgICAgCiAgICAgICAgLmJveCB7CiAgICAgICAgICAgIHdpZHRoOiAyMDBweDsKICAgICAg ICAgICAgaGVpZ2h0OiAyMDBweDsKICAgICAgICB9CgogICAgICAgIC5jbGlwcGluZyB7CiAgICAg ICAgICAgIHBvc2l0aW9uOiBhYnNvbHV0ZTsKICAgICAgICAgICAgb3ZlcmZsb3c6IGhpZGRlbjsK ICAgICAgICAgICAgYm9yZGVyOiAxcHggc29saWQgYmxhY2s7CiAgICAgICAgfQogICAgICAgIAog ICAgICAgIC5hYnNvbHV0ZSB7CiAgICAgICAgICAgIHBvc2l0aW9uOiBhYnNvbHV0ZTsKICAgICAg ICAgICAgdG9wOiAyMHB4OwogICAgICAgICAgICBsZWZ0OiAyMHB4OwogICAgICAgICAgICB3aWR0 aDogMTYwcHg7CiAgICAgICAgICAgIGhlaWdodDogMTYwcHg7CiAgICAgICAgICAgIGJhY2tncm91 bmQtY29sb3I6IGdyZWVuOwogICAgICAgIH0KICAgICAgICAKICAgICAgICAuc2hhcmluZy1wcmV2 ZW50ZXIgewogICAgICAgICAgICBoZWlnaHQ6IDEwcHg7CiAgICAgICAgICAgIHdpZHRoOiAxMHB4 OwogICAgICAgICAgICB0cmFuc2Zvcm06IHRyYW5zbGF0ZVooMCk7CiAgICAgICAgICAgIGJhY2tn cm91bmQtY29sb3I6IHNpbHZlcjsKICAgICAgICB9CiAgICAgICAgCiAgICAgICAgLnNwYWNlciB7 CiAgICAgICAgICAgIGhlaWdodDogMjAwcHg7CiAgICAgICAgfQogICAgPC9zdHlsZT4KICAgIDxz Y3JpcHQ+CiAgICAgICAgaWYgKHdpbmRvdy50ZXN0UnVubmVyKQogICAgICAgICAgICB0ZXN0UnVu bmVyLndhaXRVbnRpbERvbmUoKTsKCiAgICAgICAgZnVuY3Rpb24gZ2V0VW5zdGFibGVTY3JvbGxT Y3JpcHQoeCwgeSwgc2Nyb2xsWCwgc2Nyb2xsWSkKICAgICAgICB7CiAgICAgICAgICAgIHJldHVy biBgKGZ1bmN0aW9uKCkgewogICAgICAgICAgICAgICAgdWlDb250cm9sbGVyLnNjcm9sbFVwZGF0 ZXNEaXNhYmxlZCA9IHRydWU7CiAgICAgICAgICAgICAgICB1aUNvbnRyb2xsZXIuaW1tZWRpYXRl U2Nyb2xsRWxlbWVudEF0Q29udGVudFBvaW50VG9PZmZzZXQoJHt4fSwgJHt5fSwgJHtzY3JvbGxY fSwgJHtzY3JvbGxZfSk7CiAgICAgICAgICAgICAgICB1aUNvbnRyb2xsZXIuZG9BZnRlclByZXNl bnRhdGlvblVwZGF0ZShmdW5jdGlvbigpIHsKICAgICAgICAgICAgICAgICAgICB1aUNvbnRyb2xs ZXIudWlTY3JpcHRDb21wbGV0ZSgpOwogICAgICAgICAgICAgICAgfSk7CiAgICAgICAgICAgIH0p KCk7YDsKICAgICAgICB9CgogICAgICAgIGZ1bmN0aW9uIGRvVGVzdCgpCiAgICAgICAgewogICAg ICAgICAgICBpZiAoIXRlc3RSdW5uZXIucnVuVUlTY3JpcHQpCiAgICAgICAgICAgICAgICByZXR1 cm4KCiAgICAgICAgICAgIHRlc3RSdW5uZXIucnVuVUlTY3JpcHQoZ2V0VW5zdGFibGVTY3JvbGxT Y3JpcHQoNTAsIDUwLCAwLCAyMDApLCAoKSA9PiB7CiAgICAgICAgICAgICAgICB0ZXN0UnVubmVy Lm5vdGlmeURvbmUoKTsKICAgICAgICAgICAgfSk7CiAgICAgICAgfQogICAgICAgIAogICAgICAg IHdpbmRvdy5hZGRFdmVudExpc3RlbmVyKCdsb2FkJywgZG9UZXN0LCBmYWxzZSk7CiAgICA8L3Nj cmlwdD4KPC9oZWFkPgo8Ym9keT4KICAgIDxkaXYgaWQ9InNjcm9sbGVyIj4KICAgICAgICA8ZGl2 IGNsYXNzPSJzcGFjZXIiPjwvZGl2PgogICAgICAgIDxkaXYgY2xhc3M9ImNsaXBwaW5nIGJveCI+ CiAgICAgICAgICAgIDxkaXYgY2xhc3M9InNoYXJpbmctcHJldmVudGVyIj48L2Rpdj4KICAgICAg ICAgICAgPGRpdiBjbGFzcz0iYWJzb2x1dGUgYm94Ij48L2Rpdj4KICAgICAgICA8L2Rpdj4KICAg ICAgICA8ZGl2IGNsYXNzPSJzcGFjZXIiPjwvZGl2PgogICAgPC9kaXY+CjwvYm9keT4KPC9odG1s Pgo=