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Issue 873408 link

Starred by 2 users
Status: Assigned
Owner:
chrishtr@chromium.org
Cc:
kojii@chromium.org
susan.boorgula@chromium.org
vmp...@chromium.org
Components:
EstimatedDays: ----
NextAction: ----
OS: Linux , Windows , Mac
Pri: 2
Type: Bug-Regression



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Inputs disappear sometimes when offscreen and then they come into view

Reported by mpariz...@pdftron.com, Aug 10 
UserAgent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/68.0.3440.106 Safari/537.36

Steps to reproduce the problem:
1. Navigate to http://pdftron.s3.amazonaws.com/downloads/webviewer/test/samples/basic/index.html 
2. Scroll to the bottom of the document. Then slowly scroll back up.
3. The checkboxes on the first page will disappear for a bit and then reappear when you scroll further.

I've attached a gif that shows how to reproduce this. You may need to make your window size wider.

What is the expected behavior?
The app is not intentionally hiding the checkboxes so they shouldn't disappear.

What went wrong?
It seems like the checkboxes are still in the DOM when you inspect them in the elements panel. You can actually click on them when they aren't visible and when they become visible again they will be checked.

Did this work before? Yes Not sure

Chrome version: 68.0.3440.106  Channel: stable
OS Version: 10.0
Flash Version:
checkboxesdisappear.gif
2.7 MB View Download

Comment 1 by swarnasree.mukkala@chromium.org, Aug 12

Labels: Needs-Triage-M68 Needs-Bisect

Comment 2 by kojii@chromium.org, Aug 13

Cc: kojii@chromium.org
Components: -Blink Blink>Scroll
Labels: -Type-Bug-Regression Type-Bug
Status: Available (was: Unconfirmed)
Confirmed on stable 68.0.3440.106 and on Canary 70.0.3520.0, needed to set "100%" in the app's zoom setting.

Comment 3 by kojii@chromium.org, Aug 13

Status: Untriaged (was: Available)

Comment 4 by susan.boorgula@chromium.org, Aug 13

Cc: susan.boorgula@chromium.org
Labels: -Type-Bug -Pri-2 -Needs-Bisect hasbisect-per-revision Triaged-ET RegressedIn-64 Target-70 M-70 FoundIn-68 FoundIn-70 FoundIn-69 Target-69 Target-68 OS-Linux OS-Mac Pri-1 Type-Bug-Regression
Owner: chrishtr@chromium.org
Status: Assigned (was: Untriaged)
mparizeau@ Thanks for the issue.

Able to reproduce this issue on Windows 10, Mac OS 10.13.3 and Ubuntu 17.10 on the latest Stable 68.0.3440.106 and latest Canary 70.0.3521.0 as per the original comment.

Bisect Information:
===================
Good Build: 64.0.3263.0
Bad Build : 64.0.3264.0

By running the per-revision bisect script, below is the changelog URL.

https://chromium.googlesource.com/chromium/src/+log/deb2d42f95de80b00ef808a857627ad42163c5b0..692d8c95a4a76ff431b17ab760684aa3e4852d30

From the above Changelog, suspecting the below change:
Reviewed-on: https://chromium-review.googlesource.com/758821

chrishtr@ Please check and confirm if this issue is related to your change, else help us in assigning to the right owner.

Thanks

Comment 5 by bokan@chromium.org, Aug 17

Components: -Blink>Scroll Blink>Paint

Comment 6 by chrishtr@chromium.org, Aug 27

Labels: -Pri-1 Pri-2
►

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