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Issue metadata

Status: Available
Owner: ----
Cc:
Components:
EstimatedDays: ----
NextAction: ----
OS: Mac
Pri: 2
Type: Bug
M-X



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Ghost element if scroll bars should be hidden, nothing to scroll but using overflow-y: scroll; on a element

Reported by mic.bi...@gmail.com, Jul 15 2017

Issue description

UserAgent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/59.0.3071.115 Safari/537.36

Steps to reproduce the problem:
1. hover over the red box
2. then move the mouse to the right (green bar)
3. then you get a "ghost" element at the left (blackish square, 10PX x 10PX

4. also see https://stackoverflow.com/questions/45084714/google-chrome-has-ghost-element-on-hover
 5. and jsFiddle: https://jsfiddle.net/ppvha2bp/

What is the expected behavior?
no "ghost" element

What went wrong?
In a real life application this "ghost" element stops javascript from working until I click on a link which is not what I want cause then it also follows the link which is again not what I want.

Did this work before? N/A 

Does this work in other browsers? Yes

Chrome version: 59.0.3071.115  Channel: stable
OS Version: OS X 10.11.6
Flash Version:
 
test2.html
763 bytes View Download
Components: Blink>Layout
Status: Untriaged (was: Unconfirmed)
Reproduced in Chrome 59 and Chrome 60 dev using BrowserStack on macOS Sierra (10.12).
Seems to be macOS only for now, as I could not reproduce on Windows 7.
Components: -Blink>CSS -Blink>Layout Blink>Paint
I could also repro on Mac buy not Windows. The 'ghost element' doesn't appear in devtools (ie as an element), so this doesn't look like style or layout.

I simplified the example slightly to remove the attribute wildcard selector just in case (still repros on Mac): https://jsfiddle.net/ppvha2bp/1/

Assigning to the paint team, as something strange is being drawn here.
Labels: PaintTeamTriaged-20170717 BugSource-User
Status: Available (was: Untriaged)
Another bug dependent on the scroll settings. Only when we draw dynamic scrollbars does this manifest, so it's got to do with the OS level interactions for scrollbars-on-demand.

Comment 4 by shrike@chromium.org, Jul 19 2017

Owner: sdy@chromium.org
Status: Assigned (was: Available)
Hi sdy@,

When you have a spare moment, can you look into this?
Components: Blink>Layout>Scrollbars Blink>Scroll
Labels: M-X
Owner: ----
Status: Available (was: Assigned)

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