New issue
Advanced search Search tips
Note: Color blocks (like or ) mean that a user may not be available. Tooltip shows the reason.

Issue 771096 link

Starred by 1 user

Issue metadata

Status: Fixed
Owner:
Closed: Jan 2018
Cc:
Components:
EstimatedDays: ----
NextAction: ----
OS: Windows
Pri: 2
Type: Bug-Regression



Sign in to add a comment

Regression: Glimpse of horizintal scroll bar is seen on Download page.

Reported by dchau...@etouch.net, Oct 3 2017

Issue description

Chrome Version: 63.0.3230.0 (Official Build)da95e4026511e4539097b7dc8e09c21cb92a0aee-refs/heads/master@{#505511} 32/64-bit.
OS: Windows (7,8,8.1,10).

What steps will reproduce the problem?
1. Launch chrome and go to chrome://downloads page.
2. Zoom in the page to 175% and observe.

Unnecessary glimpse of horizontal scroll bar is seen.
Glimpse of horizontal scroll bar should not be seen.

This is a regression issue, broken in M-57 series, below is manual regression range.

Good build: 57.0.2957.0
Bad build: 57.0.2959.0

You are probably looking for a change made after 439709 (known good), but no later than 439710 (first known bad).
CHANGELOG URL:
The script might not always return single CL as suspect as some perf builds might get missing due to failure.
  https://chromium.googlesource.com/chromium/src/+log/477ef171bbd8a21249a65d28b4693552a0a1def9..abaa208feeda5799c50d802f2ebc5e8b81aa00b2

Suspect: https://chromium.googlesource.com/chromium/src/+/abaa208feeda5799c50d802f2ebc5e8b81aa00b2

@tsergeant: Kindly help to reassign, if your changes are not related to this issue.

Note: This issue is not seen on Mac and Linux OS.

Kindly review the attached screen-cast for reference.
 
Actual behavior.mp4
941 KB View Download
Expected behavior.mp4
532 KB View Download
Cc: tsergeant@chromium.org
Owner: dpa...@chromium.org
I can't actually see any difference between the actual and expected videos? I also don't have a windows machine available to test locally.

I think this is probably a WontFix, but handing off to dpapad@ to confirm.

Comment 2 by dpa...@chromium.org, Jan 23 2018

Labels: -Pri-1 Pri-2
I am able to reproduce this. Indeed the screencast does not show the problem, because it has fairly low frame rate.

Repro: Zoom-in the page gradually. Find the threshold zoom level at which the toolbar transitions from wide to narrow mode. A flashing horizontal scrollbar is shown at the bottom of the page momentarily, right before the toolbar collapses (causing the scrollbar to disappear).

Fix candidate at https://chromium-review.googlesource.com/#/c/chromium/src/+/879598.

Comment 3 by dpa...@chromium.org, Jan 23 2018

Status: Started (was: Assigned)
Project Member

Comment 4 by bugdroid1@chromium.org, Jan 23 2018

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/efff800683b5de298e4fb29db574b393d9a62de7

commit efff800683b5de298e4fb29db574b393d9a62de7
Author: dpapad <dpapad@chromium.org>
Date: Tue Jan 23 19:27:11 2018

Downloads WebUI: Prevent glimpse of flashing scrollbar.

When zooming, right before the toolbar collapses to narrow mode, an unnecessary
flashing horizontal scrollbar appears.

Bug:  771096 
Cq-Include-Trybots: master.tryserver.chromium.linux:closure_compilation
Change-Id: Iee36198f0e3719a84d7b33fd7a933493876ffe09
Reviewed-on: https://chromium-review.googlesource.com/879598
Reviewed-by: Scott Chen <scottchen@chromium.org>
Commit-Queue: Demetrios Papadopoulos <dpapad@chromium.org>
Cr-Commit-Position: refs/heads/master@{#531299}
[modify] https://crrev.com/efff800683b5de298e4fb29db574b393d9a62de7/chrome/browser/resources/md_downloads/manager.html

Comment 5 by dpa...@chromium.org, Jan 23 2018

Status: Fixed (was: Started)

Comment 6 by dchau...@etouch.net, Jan 24 2018

Labels: TE-Verified-M66 TE-Verified-66.0.3330.0
Update : 
Re-tested this issue on Windows(7,8,8.1,10) OS using latest Canary M-66 build #66.0.3330.0 by following steps mentioned in the original comment. Observed that glimpse of horizontal scroll bar is not seen on zoom in the chrome://downloads page to 175%. Hence adding TE-Verified label.

Kindly review an attached screen-cast.

Thank you!
LatestCanary behavior.mp4
1.0 MB View Download

Sign in to add a comment