Regression : Horizontal scrollbar is seen Missing in Profiles section after dragging the devtools |
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Issue descriptionVersion: 54.0.2830.0 OS: Ubuntu 14.04,Windows What steps will reproduce the problem? (1)Launch Chrome -> Open any page(Ex:chrome://apps)and press F12 to open Dev tools (2))Now Go to Profiles Section -> Select 'Record JavaScript CPU profile' option-> Now Click on Start and stop -> Record two profiles (3)Now Drag the 'Self Time' Column to L.H.S(Please refer Video)-> Press 'Esc' key to open console section(Please refer Video) -> Drag it to top and observe for Horizontal scrollbar Expected: Horizontal scrollbar should be seen in Profile section on dragging the devtools Actual: Instead Horizontal scrollbar is seen Missing This is Regression Issue broken in M-53 Manual good and Bad Builds: Good Build: 53.0.2758.0 Bad Build: 53.0.2759.0 Below is the Tool Bisect info: CHANGELOG : https://chromium.googlesource.com/chromium/src/+log/7caea6eeb8d0cbce90c6749bd21a436a6f372e56..bfce663cc58822fb6b7ce17864dbb3698ea8e4bc Suspecting https://codereview.chromium.org/2034203002 from changelog @kozyatinskiy: Please feel free to re-assign if its not related to your change
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Aug 16 2016
Root cause is: https://codereview.chromium.org/1930183002 This follow-up patch adds a comment to the code addressing this exact issue: https://codereview.chromium.org/2116873002 Quoting: " 778 // TODO(szager): Make the algorithm for adding/subtracting overflow:auto 779 // scrollbars memoryless (crbug.com/625300). This clientWidth hack will 780 // prevent the spurious horizontal scrollbar, but it can cause a converse 781 // problem: it can leave a sliver of horizontal overflow hidden behind the 782 // vertical scrollbar without creating a horizontal scrollbar. This 783 // converse problem seems to happen much less frequently in practice, so we 784 // bias the logic towards preventing unwanted horizontal scrollbars, which 785 // are more common and annoying." Marking this as blocked by the bug mentioned there.
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Oct 4 2016
Verified on Latest Linux Build 55.0.2879.0 and am able to repro . @szager : Could you please update it.
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Oct 4 2016
This is a known consequence of: https://bugs.chromium.org/p/chromium/issues/detail?id=625300 ... and this related patch: https://codereview.chromium.org/2116873002 Unfortunately, we don't have a way to definitively fix this without killing performance, aside from rewriting the entire layout engine -- which is actually in progress right now, so I have updated the blocking bug for this.
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Sep 21 2017
This is a general Layout bug, not a DevTools one. Adjusting the components.
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Nov 30 2017
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Jan 16 2018
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Jan 17
(6 days ago)
This issue has been Available for over a year. If it's no longer important or seems unlikely to be fixed, please consider closing it out. If it is important, please re-triage the issue. Sorry for the inconvenience if the bug really should have been left as Available. For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot
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Jan 17
(6 days ago)
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Comment 1 by brajkumar@chromium.org
, Aug 16 2016