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Issue 615752 link

Starred by 3 users
Status: WontFix
Owner:
skobes@chromium.org
Closed: Jun 2017
Cc:
nyerramilli@chromium.org
█ ymalik@chromium.org
bokan@chromium.org
█ ashej...@chromium.org
Components:
EstimatedDays: ----
NextAction: ----
OS: Linux , Windows
Pri: 2
Type: Bug-Regression



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Smooth scroll latches after pointer leaves the scroller

Reported by mni...@etouch.net, May 30 2016 
Version: 52.0.2743.17 dd8a3f40841cca48757118af49f275fe86f04e1e-refs/branch-heads/2743@{#119} (32/64-bit)
OS: Windows (7,8,8.1,10),Linux (14.04 LTS)
URL : https://developers.google.com/web/tools/chrome-devtools/iterate/inspect-styles/shortcuts

What steps will reproduce the problem?
1) Launch chrome and navigate to above url.
2) Now continuous scroll the page using mouse wheel moving the mouse pointer from LHS to RHS and observe

Actual : Scrolling action is not smooth
Expected : Scrolling action should be smooth

This is a regression issue broken in 'M-49' and below is the manual regression and Narrow bisect info:
Good build : 49.0.2614.4
Bad build : 49.0.2615.0

Narrow bisect info:
https://chromium.googlesource.com/chromium/src/+log/ff24f24c28067cd1996f04b36318a9cbb70cbee4..079aeefe2cdbb60ff4e53ce126d229aa850aaffa?pretty=fuller&n=10000

Suspecting : r367942 from Narrow bisect

@skobes : Could you please help to reassign if your change is not the cause for this change.

Note : 1) Issue is not seen on Mac OS.
       2) Issue is not seen on other browsers like Mozilla Firefox and Internet Explorer
Actual_video.mp4
1.4 MB Download
Expected_video.mp4
1.5 MB Download

Comment 1 by ashej...@chromium.org, May 30 2016

Labels: ReleaseBlock-Stable
Marking the above issue as RB-Stable as this needs to fixed before M52 goes stable.

Feel free to remove if not required.

Thank you!

Comment 2 by skobes@chromium.org, May 31 2016

Cc: ymalik@chromium.org
Labels: -Pri-1 -hasbisect -M-52 -ReleaseBlock-Stable Pri-2
Summary: Smooth scroll latches after pointer leaves the scroller (was: Regression : Scrolling action is not smooth for www.developers.google.com)
I think this is a consequence of the way LayerTreeHostImpl latches to a scroller until the animation completes.  It's not the ideal behavior, but not a major regression.

Comment 3 by bokan@chromium.org, Jun 1 2017

Cc: bokan@chromium.org
I don't think we want to fix this. In fact, we're making all scrolls behave this way in issue 526463 so this will be the norm in the not-to-distant future. skobes@, can we just WontFix this?

Comment 4 by skobes@chromium.org, Jun 1 2017

Status: WontFix (was: Assigned)
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