Unable to reproduce this issue on reported chrome 68.0.3440.59 Using Ubuntu 17.10 as of now we don't have Ubuntu 16.04.Attaching screen-cast for reference.
Steps:
---------
1. Launched reported chrome 
2. Downloaded given html files and dragged and opened on new tab
3. Clicked on ""click me"" in the frame  
As we have not seen ""click me"" scrolling outer page down

@Reporter: Could you please review the attached screen-cast and confirm if anything being missed here.

Thanks.!

Deleted: 863204.webm 3.5 MB

	863204.webm 3.5 MB View Download

I should note the original issue came from a Windows user so it's not just an Ubuntu <17 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

Unable to reproduce the issue on Win-10 and ubuntu 17.10 using chrome reported version #68.0.3440.59 (beta channel).

Attached a screen cast for reference.
Observed that on clicking the "click me" link did not cause Chrome to scroll the outer page down. Rather nothing happened.

As the issue seems to be reproducible on Ubuntu 16.04. Hence, forwarding the issue to inhouse team for further triaging of the issue.

Thanks...!!

I don't seem to be able to repro this issue either. Can you elaborate more on the samples and maybe take video of what you do to reproduce the issue?

Since none of us were able to reproduce the issue and there was no feedback from the reporter I close this for now. Reporter if you've got any update feel free to comment here or just open a new bug with the requested information.