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Issue 811156 link

Starred by 4 users

Issue metadata

Status: Duplicate
Merged: issue 835314
Owner:
Closed: Nov 1
Cc:
Components:
EstimatedDays: ----
NextAction: ----
OS: Windows
Pri: 2
Type: Bug-Regression



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Middle Mouse Auto Scroll Broken-Bugged

Reported by deanvg9...@gmail.com, Feb 12 2018

Issue description

UserAgent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.132 Safari/537.36

Steps to reproduce the problem:
Requirements: Use a 3 button mouse (or more than 3 buttons),
Notes: middle mouse button is the mouse wheel.
1. Visit any website
2. click the middle mouse button the enable auto scroll
3. move the mouse button down the page, do this slowly, a small distance (so that it will scroll)
4. scroll on the mouse wheel up or down or both.
5. it will stay locked to the auto scroll while icon with the correct arrow orientation relating to the starting point of it being click previously in step 2.
6. click (left, right, middle or other) will return the cursor to the normal state.

What is the expected behavior?
after step 5, it should return to the default cursor.

What went wrong?
incorrect representation of the current mouse cursor and misleading auto scroll cursor displayed.

Did this work before? Yes 6.4.388 (all previous versions that I have test)

Chrome version: 63.0.3239.132  Channel: stable
OS Version: 10.0
Flash Version: 

I couldn't understand why it wasn't autoscrolling, so I have found the bug, please fix, Thank you :) <3
 
by "Did this work before? Yes 6.4.388 (all previous versions that I have test)"
I actually Meant, "No 6.4.388 (all previous versions that I have test)"

Comment 2 by ajha@chromium.org, Feb 12 2018

Labels: Needs-Triage-M63
Cc: susan.boorgula@chromium.org
Labels: Needs-Feedback Triaged-ET
deanvg9000@ Thanks for the issue.

Tested this issue on Windows 10 on the reported version 63.0.3239.132 and the latest Canary by following the steps given in the original comment.

On 3 button mouse, after following the steps 1-5, and hitting on the left/right mouse button, can observe that the default mouse pointer is shown.
Attached is the screen cast for reference.

Request you to upgrade chrome to the latest version, retry the issue on a new profile without any flags/extensions and update the thread with the observations.

Thanks..
811156.mp4
2.7 MB View Download

Comment 4 by must...@miswave.com, Mar 13 2018

Actually the expected behaviour is that using the mouse wheel when in autoscroll exacerbates or negates some of the autoscroll movement, depending on the direction, then when mouse wheel movement stops the autoscroll continues at it's previous speed.

This is a similar bug to issue 806562.

Using the mouse wheel and/or moving outside the web page cancel the autoscroll rather than allowing it to continue.

This is a regression and extremely annoying.
This is also reproducible if you perform the actions in the opposite order.

i.e. scroll first > quickly middle click > autoscroll doesn't work

Q. How easy is it to accidentally scroll up one notch as you middle click?
A. Extremely easy

Q. How broken is autoscroll?
A. Very
Cc: krajshree@chromium.org
mustang@ - Please check the issue using latest chrome stable #66.0.3359.181 and please let us know if the issue still persists or not.
The latest chrome builds can be downloaded from the below URL:
https://www.chromium.org/getting-involved/dev-channel

Thanks...!!

Comment 7 Deleted

Comment 8 by must...@miswave.com, May 24 2018

krajshree,

I tested 66.0.3359.181 and the issue does still persist.

If anything it's worse now, the scroll stop still occurs, but now with a 1-2 second delay.
Components: -UI Blink>Scroll
Owner: sahel@chromium.org
Status: Assigned (was: Unconfirmed)
I think wheel-scroll is not handled correctly while auto-scrolling?  May be we should either ignore wheel-scroll or cancel current autoscroll?

Assigning to sahel@ who is looking at related Issue 806562.
Mergedinto: 835314
Status: Duplicate (was: Assigned)

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