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Issue 647277 link

Starred by 2 users
Status: Assigned
Owner:
flackr@chromium.org
Cc:
█ vollick@chromium.org
sunxd@chromium.org
Components:
EstimatedDays: ----
NextAction: ----
OS: Android
Pri: 3
Type: Bug



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Scrollbar incorrectly placed on element with box-shadow

Project Member Reported by bokan@chromium.org, Sep 15 2016 
Version: 55.0.2859.0
OS: Android

What steps will reproduce the problem?
(1) Open the attachment
(2) Scroll the grey box

What is the expected output?
Scrollbar should be attached to the right side of the grey box

What do you see instead?
The scrollbar is offset up and to the left

This looks like a compositor positioning issue to me.

Comment 1 by timof...@gmail.com, Sep 20 2016 

@bokan Did you miss the attachment?

Comment 2 by bokan@chromium.org, Sep 20 2016 

Sure did, thanks for pointing that out. Attached for real now.
isolated-test-case-box-shadow-scrollbar.html
1009 bytes View Download

Comment 3 by vollick@chromium.org, Sep 21 2016

Cc: vollick@chromium.org sunxd@chromium.org
Components: -Internals>Compositing Blink>Scroll
Labels: Hotlist-ThreadedRendering
Owner: flackr@chromium.org
Status: Assigned (was: Untriaged)
This seems to clearly be a case of reparenting scrollbars going wrong.

Will reproduce on any high dpi device with overlay scrollbars. Eg, mbp.

Comment 4 by flackr@chromium.org, Nov 22 2016

Labels: -Hotlist-ThreadedRendering Hotlist-Threaded-Rendering

Comment 5 by flackr@chromium.org, Jan 24 2017

Labels: -Hotlist-Threaded-Rendering Hotlist-ThreadedRendering
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