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Issue metadata

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



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Unable to grab thumb of horizontal scroll bar in ChromeOS and MacOS

Reported by weijen0...@gmail.com, Mar 9 2018

Issue description

UserAgent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_3) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/64.0.3282.186 Safari/537.36

Steps to reproduce the problem:
1. Open: https://codepen.io/JonClements/pen/VQgpaq
2. Try to grab the thumb of horizontal scrollbar

What is the expected behavior?
It works and you can drag it to scroll.

What went wrong?
It doesn't work.

Did this work before? N/A 

Chrome version: 64.0.3282.186  Channel: n/a
OS Version: OS X 10.13.3
Flash Version: 

In MacOS, you need to change a system setting. Go to System Preferences -> General -> Under "Show Scroll bars" -> Change from "Automatically based on mouse or trackpad" to "When scrolling"
 

Comment 1 by kochi@chromium.org, Mar 10 2018

Components: -Blink Blink>Layout>Scrollbars
Status: Untriaged (was: Unconfirmed)

Comment 2 by kochi@chromium.org, Mar 10 2018

Status: Unconfirmed (was: Untriaged)
Maybe depending on your screen size, but when I have enough space to
hold 500x500 pix in the bottom pane in the codepen page, hover the pointer
on the div and trying to scroll horizontally via touchpad on macbook
showed a horizontal scrollbar while the content is scrolling.

You may just not be seeing the horizontal scroll bar at the bottom because
the part was chopped out by the height of the bottom pane?

I checked with both settings of "Automatically based on mouse or trackpad" and
"When scrolling".

If you set it "Always", do you see your horizontal bar, and does it fit in the
bottom pane?
Labels: Needs-Triage-M64
Are you able to click on the horizontal scroll bar and drag it as well? 

Comment 5 by kochi@chromium.org, Mar 13 2018

Status: Available (was: Unconfirmed)
Could you check my screen record?

I think I got your point - in the video, the first half you see only vertical scroll bar,
but when I expand the bottom pane in the second half, you can see the horizontal
scroll bar.
The vertical scroll bar can be grabbed/dragged, while the horizontal bar cannot be.

mac_scroll_bar3.mov
12.5 MB View Download
That's correct. Thank you for taking the time to do the screen capture. 

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