yuvzhenko8@ Thanks for the issue.

Tested this issue on Windows 10 on the latest Canary 66.0.3335.5 and Stable 64.0.3282.119 and unable to reproduce the issue by following the steps mentioned in the original comment.

On following the steps mentioned above and holding down the mouse wheel and pulling it up and down, could see no issues in scrolling.
Attached is the screen cast for reference.

Request you to please check and confirm if anything is missed from our end in reproducing the issue.

Also request you to please retry the issue on a new chrome profile without any flags/extensions and update the thread with the observations.

Thanks..

Deleted: 807689.webm 3.4 MB

	807689.webm 3.4 MB View Download

Just click on any item. Then hold the mouse wheel and pull up or down. If the scrolling does not stop after 3 seconds, try again.

The browser does not have any flags/extensions.

Deleted: Scrolling bug.webm 6.5 MB

	Scrolling bug.webm 6.5 MB View Download

Thank you for providing more feedback. Adding requester "susanjunia.boorgula@techmahindra.com" to the cc list and removing "Needs-Feedback" label.

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot

Not in Blink, but the browser-side code has to handle DOM change under
the mouse position while scrolling (with middle-button held)?

The code must handle the DOM change made by the mouse click, and continue the scrolling.

Able to reproduce the issue on Windows 10 using chrome latest stable #65.0.3325.146 and latest canary #67.0.3362.0. Issue is specific to OS-Win.

Bisect Information:
=====================
Good build: 61.0.3132.0
Bad Build : 61.0.3133.0

Change Log URL: 
https://chromium.googlesource.com/chromium/src/+log/0c7f6df48120d44213fabf09fb6b6b0cfe0c5f27..07711ae8ada95f59bfa6f9390f8dfb99f1f97618

From the above change log suspecting below change
Review-Url: https://codereview.chromium.org/2918053002

bokan@ - Could you please check whether this is caused with respect to author(aelias@) change, if not please help us in assigning it to the right owner.
Note: Assigning it to one of the reviewer as the author(aelias@) seems to be inactive.

Thanks...!!

Sahel, ptal.

hi, maybe it's the same problem as in:

https://bugs.chromium.org/p/chromium/issues/detail?id=797708

Looks like same as issue 797708. 

The issue here is related to middle click autoscroll rather than wheel scrolling.
issue 797708 is related to smooth scrolling on compositor.

I believe that this issue has the same roots as this one: 

https://bugs.chromium.org/p/chromium/issues/detail?id=493078

I can reproduce this like this:
1) Open any page which overflows on Y axis.
2) Scroll with the wheel (no autoscroll) for 5 seconds in a single direction
3) Try using autoscroll.

It freezes but works again if I click out of it and activate it again by clicking the middle button.

 Issue 747839  has been merged into this issue.

Can't reproduce anymore on Chrome 69.0.3497.100 (Official Build) (64-bit)

egecan@ what you described in comment #16 is not related to the original bug which is about Autoscroll stopping when the DOM element is removed.