[Webkit-unassigned] [Bug 239418] Incorrect clipping when animation is present.

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=239418

Simon Fraser (smfr) <simon.fraser at apple.com> changed:

           What    |Removed                     |Added
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           Assignee|webkit-unassigned at lists.web |simon.fraser at apple.com
                   |kit.org                     |

--- Comment #6 from Simon Fraser (smfr) <simon.fraser at apple.com> ---
S---------C-c-- -- tb---- ------ 30 30 0x113170700 (0,0) width=780 height=844 [SA 0x113045120] (layerID 482) {sc 30} RenderView 0x1480007b0
S-----------c-- -- tb---- lg---- 30 30   + 0x113170960 (0,0) width=780 height=844 [SA 0x113045620] RenderBlock 0x148001640 HTML 0x148000f20
--------------- -- ------ lg---- 30 30     + 0x113170a90 (28,20) width=300 height=300 RenderBlock (relative positioned) 0x148003190 DIV 0x148002b60 class='container'
S---------C---- -- ------ lg-c-- 30 30     + 0x113170bc0 (0,0) width=25 height=25 (layerID 485) RenderBlock (positioned) 0x1480032d0 DIV 0x148002bf0 class='trigger'
S-O-------C---- -- tb---- lg-c-- 30 30     + 0x113170cf0 (10,0) width=102 height=102 [SA 0x1130456c0] (layerID 488) overlap RenderBlock 0x148003410 DIV 0x148002c80 class='middle'
--------------- -- ------ lg---- 30 30       + 0x113170e20 (10,10) width=280 height=280 RenderBlock (positioned) 0x148003550 DIV 0x148002e60 class='inner'

The inner layer isn't composited; it paints into its paint-order ancestor, which is 0x113170cf0. However, when computing the bounds of that layer, we've taken overflow:hidden into account, despite it having non-clipped descendants. I think that's the bug.

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