Table cells have incorrect height if the default OS zoom level is 125% (Windows 10)
Reported by
supp...@devexpress.com,
Nov 16 2017
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Issue descriptionUserAgent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/62.0.3202.94 Safari/537.36 Steps to reproduce the problem: 1.Open the tableExample.html file in the Chrome browser. Table cells have 50px height defined in CSS by default (see sreenshot1.png). We can see this in DevTools. 2. Change the default system zoom level to '125%' (see screenshot2.png). 3. Sign out and Sign In. 4. Open the tableExample.html file again and enable browser DevTools. Cells will now have different height. (see screenshot3.png) What is the expected behavior? Cells should always have the same height independent the zoom level as in IE and Firefox What went wrong? It looks like the browser changes elements height despite defined CSS rules Did this work before? No Chrome version: 62.0.3202.94 Channel: stable OS Version: 10.0 Flash Version: Shockwave Flash 27.0 r0 Although difference is not really significant in this example, this behavior doesn't allow us to efficiently calculate cells size in certain cases
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Nov 16 2017
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Nov 17 2017
Able to reproduce the issue on reported version 62.0.3202.94 and latest Canary 64.0.3270.0 using Windows 10, Ubuntu 14.04 and Mac 10.12.6, Bisect Info: ================ Good build: 54.0.2800.0 Bad build: 54.0.2802.0 You are probably looking for a change made after 406435 (known good), but no lat er than 406437 (first known bad). CHANGELOG URL: https://chromium.googlesource.com/chromium/src/+log/281516541a3aa129b5a23c29cd fb926c99f3d516..9ab8b8c345e668ae0932c162810604ea4eb7bc42 Reviewed on: https://codereview.chromium.org/2157243003 Suspecting same from changelog. @bsep,Kindly take a look and please help us to reassign this issue to a right owner if not with respect to this change. Thanks.!
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Nov 17 2017
Not a regression. The bisected patch just enabled 125% zoom. I'm not even sure this is a bug, we may just be overly honest in the devtools. The 50 CSS pixel height is scaled up to 62.5 real pixels, but we snap it to 62 pixels to avoid subpixel artifacts. Then we scale that back down to CSS pixels for the devtools. 62 / 1.25 = 49.6. |
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Comment 1 by manoranj...@chromium.org
, Nov 16 2017