background disappears in certain case
Reported by
lion...@gmail.com,
Dec 18
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Issue descriptionUserAgent: Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/71.0.3578.44 Safari/537.36 Steps to reproduce the problem: 1. make a outer box with red background 2. put a inner box with position: relative, and same size with the outer box 3. transform inner box to left, to check the outer box background What is the expected behavior? should see the outer box background is red What went wrong? the outer box background disappeares Did this work before? No Does this work in other browsers? Yes Chrome version: 71.0.3578.44 Channel: stable OS Version: 6.1 (Windows 7, Windows Server 2008 R2) Flash Version: i made a demo to produce this bug. https://jsfiddle.net/y9mwdbh4/2/
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Dec 21
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Dec 24
I can't reproduce in Canary on Mac, but the bug is present in M-71 on Mac. At some point I'll bisect to figure out what fixed it.
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Dec 25
Latest canary 73.0.3650.0 on windows still has this bug.
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Jan 8
You're right, this is still broken. It broke with SPv175 enabled, so a PrePaint invalidation issue with transitions not triggering repaint of parents that they occlude?
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Jan 17
(5 days ago)
Also reproduced on Linux. This seems a background obscuration issue. When the inner object moved, we still think the outer object's background as obscured so don't paint it. |
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Comment 1 by phanindra.mandapaka@chromium.org
, Dec 18