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Issue 778304 link

Starred by 2 users

Issue metadata

Status: WontFix
Owner: ----
Closed: Nov 2017
Cc:
Components:
EstimatedDays: ----
NextAction: 2017-11-30
OS: Linux , Windows , Mac
Pri: 2
Type: Compat



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on some Facebook pages, the fixed right pane twitches/bounces during upward scrolling

Reported by billdill...@gmail.com, Oct 25 2017

Issue description

UserAgent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/62.0.3202.62 Safari/537.36

Example URL:
https://www.facebook.com/lilorganickitchenwhitby/

Steps to reproduce the problem:
Go to https://www.facebook.com/lilorganickitchenwhitby/ , scroll down the page a good amount. Now, start scrolling up the page and observe that during upward scrolling, the right pane (which is 'fixed') is twitching/bouncing. It is not supposed to do this, it should be stable during upward scrolling

What is the expected behavior?

What went wrong?
please see attached screenshot, I put a red rectangle around the pane that is twitching/bouncing during upward scrolling

Does it occur on multiple sites: N/A

Is it a problem with a plugin? N/A 

Did this work before? N/A 

Does this work in other browsers? N/A

Chrome version: 62.0.3202.62  Channel: stable
OS Version: 10.0
Flash Version:
 
fbcsb.png
2.0 MB View Download
Labels: Needs-Triage-M62
Cc: sc00335...@techmahindra.com
Components: Blink>Scroll
Labels: Triaged-ET M-64 OS-Linux OS-Mac
Status: Untriaged (was: Unconfirmed)
Able to reproduce this issue on reported version 62.0.3202.62 and on latest canary 64.0.3251.0 using Mac 10.12.6 , Ubuntu 14.04 and Windows 10 with steps mentioned in comment#0. 

This issue is seen from M50.[50.0.2661.54]. Hence considering this issue as Non-regression and marking as Untriaged.

Issue is seen in firefox as well.
So is this a site outreach to Facebook issue or an issue in Chrome?
What scrolling mode are you using? (scrollbar, mousewheel, touch, touchpad?)

Also you indicate the item is fixed position the item switches back and forth between relative and fixed position whether it is actually scrolled or not.

Perhaps you are seeing that movement during that phase when its positioning is being adjusted? 

Comment 5 by bokan@chromium.org, Nov 16 2017

Cc: bokan@chromium.org
NextAction: 2017-11-30
If it repros in Firefox it's likely an issue on Facebook's end. I can't repro anymore - perhaps they've fixed it? billdillensrevenge@, are you still seeing the issue?
@comment 4, using a mouse wheel. 
I just checked in Chrome and Edge too and I'm still seeing it, it's very likely a problem with Facebooks website. I do not work for google, should someone from chromium contact Facebook about this issue so they can fix it? I'm sure they would appreciate it

Comment 7 by bokan@chromium.org, Nov 16 2017

Cc: n...@fb.com
+n8s@fb.com who might know the correct channels to report a Facebook bug.
Cc: flackr@chromium.org
Status: WontFix (was: Untriaged)
Yes we have reported it to facebook. This is definitely an issue of their site and is a side effect of compositor scrolling.

flackr@ put together an sticky position example that should avoid the jitter. See http://jsbin.com/goxibik/edit?html,css,js,output
The NextAction date has arrived: 2017-11-30

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