136397 2014-08-29 17:02:06 -0700 Mask with visibility:hidden prevent descendants from becoming visible 2014-08-29 17:02:06 -0700 1 1 1 Unclassified WebKit Layout and Rendering 528+ (Nightly build) Unspecified Unspecified NEW P2 Normal --- 1 simon.fraser webkit-unassigned oldest_to_newest 1032294 0 237391 simon.fraser 2014-08-29 17:02:06 -0700 Created attachment 237391 Testacase The combination of a mask and visibility:hidden prevents a visibility:visible child from appearing. Bug does not occur without compositing. 237391 2014-08-29 17:02:06 -0700 2014-08-29 17:02:06 -0700 Testacase masked-child-no-backing.html text/html 1783 simon.fraser PCFET0NUWVBFIGh0bWw+Cgo8aHRtbD4KPGhlYWQ+CiAgICA8c3R5bGU+CiAgICAgICAgLmNvbnRh aW5lciB7CiAgICAgICAgICAgIHBvc2l0aW9uOiByZWxhdGl2ZTsKICAgICAgICAgICAgaGVpZ2h0 OiAyMDBweDsKICAgICAgICAgICAgd2lkdGg6IDIwMHB4OwogICAgICAgICAgICBtYXJnaW46IDEw cHg7CiAgICAgICAgfQogICAgICAgIAogICAgICAgIC5jb21wb3NpdGVkIHsKICAgICAgICAgICAg LXdlYmtpdC10cmFuc2Zvcm06IHRyYW5zbGF0ZVooMCk7ICAvKiBjb21tZW50IG91dCB0byBmaXgg dGhlIGJ1ZyAqLwogICAgICAgICAgICB6LWluZGV4OiAwOwogICAgICAgIH0KICAgICAgICAKICAg ICAgICAuY2hpbGQgewogICAgICAgICAgICBwb3NpdGlvbjogYWJzb2x1dGU7CiAgICAgICAgICAg IGhlaWdodDogMTAwJTsKICAgICAgICAgICAgd2lkdGg6IDEwMCU7CiAgICAgICAgICAgIGJhY2tn cm91bmQtY29sb3I6IGJsdWU7CiAgICAgICAgfQogICAgICAgIAogICAgICAgIC5tYXNrZWQgewog ICAgICAgICAgICAtd2Via2l0LW1hc2s6IGxpbmVhci1ncmFkaWVudChibGFjaywgYmxhY2spOwog ICAgICAgIH0KICAgICAgICAKICAgICAgICAuZ3JhbmRjaGlsZCB7CiAgICAgICAgICAgIHBvc2l0 aW9uOiBhYnNvbHV0ZTsKICAgICAgICAgICAgdG9wOiAxMHB4OwogICAgICAgICAgICBsZWZ0OiAx MHB4OwogICAgICAgICAgICB3aWR0aDogMTUwcHg7CiAgICAgICAgICAgIGhlaWdodDogMTUwcHg7 CiAgICAgICAgICAgIGJhY2tncm91bmQtY29sb3I6IHNpbHZlcjsKICAgICAgICAgICAgYm9yZGVy OiAxcHggc29saWQgYmxhY2s7CiAgICAgICAgICAgIHZpc2liaWxpdHk6IHZpc2libGU7CiAgICAg ICAgfQogICAgPC9zdHlsZT4KICAgIDxzY3JpcHQ+CiAgICAgICAgaWYgKHdpbmRvdy50ZXN0UnVu bmVyKQogICAgICAgICAgICB0ZXN0UnVubmVyLmR1bXBBc1RleHQoKTsKCiAgICAgICAgZnVuY3Rp b24gZHVtcExheWVycygpCiAgICAgICAgewogICAgICAgICAgICB2YXIgbGF5ZXJzUmVzdWx0ID0g ZG9jdW1lbnQuZ2V0RWxlbWVudEJ5SWQoJ2xheWVycycpOwogICAgICAgICAgICBpZiAod2luZG93 LnRlc3RSdW5uZXIpCiAgICAgICAgICAgICAgICBsYXllcnNSZXN1bHQuaW5uZXJUZXh0ID0gd2lu ZG93LmludGVybmFscy5sYXllclRyZWVBc1RleHQoZG9jdW1lbnQpOwogICAgICAgIH0KCiAgICAg ICAgd2luZG93LmFkZEV2ZW50TGlzdGVuZXIoJ2xvYWQnLCBkdW1wTGF5ZXJzLCBmYWxzZSkKICAg IDwvc2NyaXB0Pgo8L2hlYWQ+Cjxib2R5PgogICAgPCEtLSBkaXYgY2xhc3M9ImNvbXBvc2l0ZWQg Y29udGFpbmVyIj4KICAgICAgICA8aW1nIGNsYXNzPSJjaGlsZCIgc3JjPSIuLi9yZXNvdXJjZXMv YXBwbGUuanBnIj4KICAgIDwvZGl2LS0+CgogICAgPGRpdiBjbGFzcz0iY29tcG9zaXRlZCBjb250 YWluZXIiPjxpbWcgY2xhc3M9ImNoaWxkIiBzcmM9Ii4uL3Jlc291cmNlcy9hcHBsZS5qcGciIHN0 eWxlPSJ2aXNpYmlsaXR5OmhpZGRlbiI+PGRpdiBjbGFzcz0iY29tcG9zaXRlZCBncmFuZGNoaWxk Ij48L2Rpdj48L2Rpdj4KCiAgICA8ZGl2IGNsYXNzPSJjb21wb3NpdGVkIGNvbnRhaW5lciI+YTxk aXYgY2xhc3M9Im1hc2tlZCBjaGlsZCIgc3R5bGU9InZpc2liaWxpdHk6aGlkZGVuIj5jaGlsZDxk aXYgY2xhc3M9ImNvbXBvc2l0ZWQgZ3JhbmRjaGlsZCI+Z3JhbmRjaGlsZDwvZGl2PjwvZGl2Pjwv ZGl2PgoKPHByZSBpZD0ibGF5ZXJzIj5MYXllciB0cmVlIGdvZXMgaGVyZSBpbiBEUlQ8L3ByZT4K PC9ib2R5Pgo8L2h0bWw+Cg==