screen jumping after scrolling stops
Reported by
wisbu...@gmail.com,
Feb 7 2018
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Issue descriptionUserAgent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/66.0.3342.0 Safari/537.36 Example URL: https://www.reddit.com/ Steps to reproduce the problem: 1. With Mac OSX, Canary 66.0.3342.0, use Incognito to make sure clean profile with no Extensions/Plugins. 2. Go to any page on https://www.reddit.com/ 3. Scroll down with trackpad, mouse, or keyboard What is the expected behavior? After you stop scrolling, screen should not move. What went wrong? After you stop scrolling, screen will jump. Here is a video capture. I am using the trackpad to scroll down only, then pause. Watch the scrollbar on the right. It will jump during the pause. https://streamable.com/wvhy0 This never happened before until I restarted my Mac, which updated to the latest Canary version. There is no issue with Chrome Stable 64.0.3282.140 on the same Mac. Does it occur on multiple sites: N/A Is it a problem with a plugin? N/A Did this work before? Yes 64.0.3282.140 Does this work in other browsers? N/A Chrome version: 66.0.3342.0 Channel: canary OS Version: OS X 10.12.6 Flash Version: 29.0.0.96
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Feb 8 2018
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Feb 8 2018
Able to reprodcue this issue on reported version 66.0.3342.0 canary Using Mac 10.13.1 and Mac 10.12.6 Mac book Pro Retina. i.e; Page jumps on scrolling Reddit.com Observations: 1. Issue is not seen in 66.0.3342.0 canary using Mac book Air(both 10.12.6 and 10.13.3) 2. Issue is not seen in equivalent dev(i.e; 66.0.3342.0 dev) 3. Issue is not seen in Linux and Windows As issue is not seen in equivalent dev,it will not be possible for TE to provide bisect. Hence removing Needs-Bisect label and marking as Untriaged. Could someone from Blink>Scroll team to have a look at this issue. Thanks!
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Feb 8 2018
This started happening for me today too. I'm on 65.0.3325.51 dev, Windows 10 17083.
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Feb 8 2018
Just to add some info, I have disabled 4 scroll related flags and the issue seems to be solved. Don't know which one specifically triggers the bug, but that should help triaging. #enable-wheel-scroll-latching #enable-scroll-anchor-serialization #enable-scroll-anchoring #overscroll-history-navigation
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Feb 8 2018
If it is happening with keyboard as well that will rule out latching and point to anchoring. Are you able to try it with just the scroll-anchoring off?
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Feb 8 2018
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Feb 8 2018
I was having this same problem on Version 65.0.3325.51 (Official Build) dev (64-bit) Windows 10 It looks like disabling just #enable-scroll-anchoring may have fixed it for me
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Feb 9 2018
Update: On MacOS 10.12.6 Sierra, I tried changing the value of #enable-scroll-anchoring from Default to Enabled. Then restarted Chrome (which then also auto-updated to 66.0.3343.0 #535276). The bug disappeared. Then I fiddled around with the #enable-scroll-anchoring values, trying Disabled, Enabled, Default (with restarts). I could not reproduce the bug with any setting. Then I downgraded back to Canary 66.0.3342.0 #534887 again (I had saved a copy of the .dmg installer). I still could not reproduce the bug with any setting of #enable-scroll-anchoring. So either upgrading Chrome or toggling the #enable-scroll-anchoring value seems to permanently fix the bug. Can someone who currently has the bug upgrade their Chrome (without touching the #enable-scroll-anchoring flag) to see if that fixes it? If not, then try toggling #enable-scroll-anchoring flags.
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Feb 15 2018
wisbucky@, is it still fixed in more recent canaries? In particular, I'd make sure to try toggling #enable-scroll-anchor-serialization as that's new and under development.
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Feb 22 2018
wisbucky@ what do you want us to do with this issue? Something might have also been adjusted on the reddit.com side. If we can't repro it is hard to fix :-)
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Feb 26 2018
I think this can be closed. I was not able to reproduce with later versions of Canary.
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Feb 26 2018
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Comment 1 by manoranj...@chromium.org
, Feb 8 2018