clip-path polygon failing
Reported by
cyril.au...@gmail.com,
Dec 11 2017
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Issue descriptionUserAgent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.84 Safari/537.36 Example URL: https://caub.github.io/color-wheel/draft Steps to reproduce the problem: 1. https://caub.github.io/color-wheel/draft 2. 3. What is the expected behavior? It should render a triangle (with gradients) within a hue-circle What went wrong? Chrome recently displays a square shadow around the triangle, as shown in the enclosed capture Does it occur on multiple sites: N/A Is it a problem with a plugin? No Did this work before? N/A Does this work in other browsers? Yes Chrome version: 63.0.3239.84 Channel: stable OS Version: Flash Version: works fine on Firefox Used to work on older chrome versions (60-62)
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Dec 11 2017
This is the regression which started after the M63 branch point Bisect result : You are probably looking for a change made after 63.0.3239.16 (known good), but no later than 63.0.3239.17 (first known bad). CHANGELOG URL: https://chromium.googlesource.com/chromium/src/+log/63.0.3239.16..63.0.3239.17?pretty=full Suspecting CL : https://chromium.googlesource.com/chromium/src/+/e6cb080f0f8d50e958de54bade38ab2f231ebfe9 Note : The same works fine on latest Chrome Dev(64.0.3282.14) and Canary(65.0.3291.0). Working on reverse bisect to see which CL has fixed this issue.
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Dec 12 2017
Ok, thanks
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Dec 12 2017
pbommana@ did a reverse bisect and found https://chromium.googlesource.com/chromium/src/+/5b07996e178c5f4e153e771d48ab839867fa7440 fixed the issue. I just verified his results. As it was a revert and reland, the bug was probably introduced and fixed multiple times. It is unfortunate that M63 branched when the bug was present. I think the fix is too complex to safely cherry-pick to stable channel, especially the combination of clip-path and canvas are pretty rare. |
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Comment 1 by gov...@chromium.org
, Dec 11 2017Labels: Needs-Triage-M63 M-63