My version is ok, but the issue is in the current one 65.0.3325.181

Unable to reproduce this issue on reported version 65.0.3325.181 using Windows 10 with steps mentioned in comment#0. Attaching screencast for reference.

@Reporter: Please check the video and let us know if we miss anything. Is this happening on all sites or with any particular URL? Also please check the issue by resetting all flags to default. Any further information on reproducing this issue would help in further investigation on this.

Thanks!

Deleted: 825139.mp4 4.7 MB

	825139.mp4 4.7 MB View Download

Hello,
Please check video attached:
I clicked on scroll bar and move pointer out of it and released the mouse button. After that my scroll bar moved after my mouse even I did not click anything. The worse thing that I had to click on scroll bar to deactivate this issue

Thank you for providing more feedback. Adding the requester to the cc list.

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

Does this happen in an incognito window? Do you have any extensions or settings enabled that might cause it.

I can't reproduce it myself on Windows 10 with the exact same file you have in your video.

Hi,
Over 70 computers are affected after Chrome update in my organization. Do you have any opinion what my cause this issue? When the update came to Chrome I verified and I am sure that this cause it. I even came back to previous version to verify if the issue occurs, and it was not. The pdf file is an example, we are working on thousand PDFs and everyone have the same issues. 

answering to your question, no I did not used Incognito window. We are not using any addons too. I know this is a weird issue. In my home I updated Chrome to the newer version and I did not have any issues like that. I'm not sure why this is happening. 

regarding to addons, Yes I have addon Password Kepper installed, but others are not. Looking forward for your response.

Does that happen only on PDFs, and not on webpages?

What Windows version is it?

Reporter that would be great if you can provide additional feedback. Particularly do you happen to see the problem on other web pages or is it only isolated to the pdfs that you open with Chrome?

Hello,
Yes, it happens only in PDFs. Windows 10 Pro 64-bit

Thank you for providing more feedback. Adding the requester to the cc list.

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

more information regarding system version

Deleted: spec.JPG 84.2 KB

	spec.JPG 84.2 KB View Download

Cannot reproduce on Windows 10, Chrome 65.0.3325.181.

Symptoms look like  bug 804481  and bug 39105, but it seems like you get it without right click or switching tabs. Those bugs are not specific to PDFs, though.

Tim, do you have any idea about what could be happening here?

The symptoms are similar to bug 39105, but I strongly suspect it is not the same issue. That bug is specific to Linux as we can't do mouse capturing there. I also cannot reproduce this issue on Linux.

Unfortunately I don't really know anything about how the mouse handling works on Windows so can't provide any input of a possible root cause. My only suggestions would be:

1. Reporter: are you using any sort of remote desktop software?
2. Could you try in an incognito window to make sure it is also a problem there?
3. Also try with a new empty profile?

Hello All,

This issue appears on all computers in our company after Chrome update. We are having 40% Windows 7 and 60% Windows 10 desktops, the issue appears even on Laptops too.

But returning to your questions:
1. We are not using Remote Desktop, every user is working his own computer
2. I used incognito window with the same results, please check video attached
3. will respond in next comment

Deleted: Recording #5.mp4 14.7 MB

	Recording #5.mp4 14.7 MB View Download

Please check the same issue on different computer (Laptop) with Windows 7.

Deleted: Recording #2.mp4 7.8 MB

	Recording #2.mp4 7.8 MB View Download

Returning to your question:
3. Tried to check it on three different profiles, Local profiles, domain profiles and Administration profiles, all of them have the same issues. Local and domain profiles were created as new, admin profile was used before.

The weird thing is that before Chrome update everything was ok. So I am not sure what it needs to be checked. Of course I can tell you that on my private computer in my house I don't have this issue. 

klekojr@, on the affected computers, could you check if this still occurs in Chrome Canary channel: https://www.google.com/chrome/browser/canary.html

Hello bokan@ thanks for sharing this link. I can truly say that on Chrome Canary this issue is not appearing. I can freely scroll any PDF opened inside Chrome. Unfortunately I cannot install Chrome Canary for all affected computers.

Tried on Windows 10 and Windows 7, 

Ok, the issue (if it's in Chrome) must have been fixed sometime between M65 and M67. Given that M66 is going to stable sometime in the next few days we can't merge any new fixes into it anyway so there isn't anything for us to do in this bug - we'll just have to wait for the fix to be pushed to stable users.

klekojr@, you could try installing Chrome Beta and see if the fix is there as well. If so, that should be pushed to the stable Chrome channel in the coming days. Otherwise it'll be about a 6 week wait until M67 is shipped to stable. If the issue is still occurring then (and you don't see it in Canary today) that indicates some kind of external problem (extensions, profiles, etc.) but not with Chrome itself.

For the details regarding our last issue.

The issue was fixed when we received new update. 

To inform you, all Dell computers were only affected. Probably that is why you could not reproduce it. I tested this on my private Dell computer and in work. So I can confirm this.
Please close this issue/ticket as solved.

 Issue 836256  has been merged into this issue.